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Fencer Vulns
medium 6.5

CVE-2023-2650 json

Possible DoS translating ASN.1 object identifiers

published 2023-05-30 3 y ago modified 2026-10-14 25 d ago also EUVD-2023-34116 , GHSA-gqxg-9vfr-p9cg , JLSEC-2026-239

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
75.4%
EPSS 75.4% chance of exploitation in 30 days, percentile 99.5%
public exploits
0
none known

Summary

Issue summary: Processing some specially crafted ASN.1 object identifiers or data containing them may be very slow.

Impact summary: Applications that use OBJ_obj2txt() directly, or use any of the OpenSSL subsystems OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS with no message size limit may experience notable to very long delays when processing those messages, which may lead to a Denial of Service.

An OBJECT IDENTIFIER is composed of a series of numbers - sub-identifiers - most of which have no size limit. OBJ_obj2txt() may be used to translate an ASN.1 OBJECT IDENTIFIER given in DER encoding form (using the OpenSSL type ASN1_OBJECT) to its canonical numeric text form, which are the sub-identifiers of the OBJECT IDENTIFIER in decimal form, separated by periods.

When one of the sub-identifiers in the OBJECT IDENTIFIER is very large (these are sizes that are seen as absurdly large, taking up tens or hundreds of KiBs), the translation to a decimal number in text may take a very long time. The time complexity is O(n^2) with 'n' being the size of the sub-identifiers in bytes (*).

With OpenSSL 3.0, support to fetch cryptographic algorithms using names / identifiers in string form was introduced. This includes using OBJECT IDENTIFIERs in canonical numeric text form as identifiers for fetching algorithms.

Such OBJECT IDENTIFIERs may be received through the ASN.1 structure AlgorithmIdentifier, which is commonly used in multiple protocols to specify what cryptographic algorithm should be used to sign or verify, encrypt or decrypt, or digest passed data.

Applications that call OBJ_obj2txt() directly with untrusted data are affected, with any version of OpenSSL. If the use is for the mere purpose of display, the severity is considered low.

In OpenSSL 3.0 and newer, this affects the subsystems OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS. It also impacts anything that processes X.509 certificates, including simple things like verifying its signature.

The impact on TLS is relatively low, because all versions of OpenSSL have a 100KiB limit on the peer's certificate chain. Additionally, this only impacts clients, or servers that have explicitly enabled client authentication.

In OpenSSL 1.1.1 and 1.0.2, this only affects displaying diverse objects, such as X.509 certificates. This is assumed to not happen in such a way that it would cause a Denial of Service, so these versions are considered not affected by this issue in such a way that it would be cause for concern, and the severity is therefore considered low.

Patch / fix

  • julia OpenSSL_jll 1.1.21+0, 3.0.9+0
  • julia Openresty_jll 1.27.1+0
  • OpenSSL OpenSSL 1.0.2zh, 1.1.1u, 3.0.9
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • openssl Debian 14, Debian 13, Debian 12 3.0.9-1

debian advisories DEBIAN-CVE-2023-2650

  • edk2 Ubuntu 22.04 LTS 2022.02-3ubuntu0.22.04.4
  • nodejs Ubuntu 22.04 LTS 12.22.9~dfsg-1ubuntu3.4
  • openssl Ubuntu 18.04 LTS 1.1.1-1ubuntu2.1~18.04.23
  • openssl Ubuntu 20.04 LTS 1.1.1f-1ubuntu2.19
  • openssl Ubuntu 22.04 LTS 3.0.2-0ubuntu1.10
  • openssl1.0 Ubuntu 18.04 LTS 1.0.2n-1ubuntu5.13
  • openssl Ubuntu Pro 14.04 LTS 1.0.1f-1ubuntu2.27+esm9
  • openssl Ubuntu Pro 16.04 LTS 1.0.2g-1ubuntu4.20+esm9

ubuntu advisories UBUNTU-CVE-2023-2650

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • edk2 RHEL 9 20230524-3.el9
  • edk2-ovmf RHEL 9 20230524-3.el9
  • edk2-tools RHEL 9 20230524-3.el9
  • edk2-aarch64 RHEL 9 20230524-3.el9
  • openssl RHEL 9 1:3.0.7-16.el9_2
  • openssl-libs RHEL 9 1:3.0.7-16.el9_2
  • openssl-perl RHEL 9 1:3.0.7-16.el9_2
  • jbcs-httpd24-curl jboss core services 1 8.4.0-2.el7jbcs

red hat advisories RHSA-2023:6330RHSA-2023:3722RHSA-2023:7625RHSA-2023:7622

  • openssl-3 SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 3.0.8-150500.5.3.1
  • openssl-1_1 SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 1.1.1l-150500.17.6.1
  • openssl-3 SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 3.0.8-150400.4.26.1
  • openssl-1_1 SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +11 more 1.1.1d-150200.11.65.1
  • openssl-1_1 SLE Module for Basesystem 15 SP4, SLE Micro 5.4, SLE Micro 5.3 +2 more 1.1.1l-150400.7.37.1
  • openssl SLES 12 SP2-BCL 1.0.2j-60.95.1
  • openssl-1_0_0 SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES for SAP 15 SP1 +11 more 1.0.2p-150000.3.76.1
  • openssl-1_0_0 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +5 more 1.0.2p-3.75.1

suse advisories SUSE-SU-2023:2620-1SUSE-SU-2023:29171-1SUSE-SU-2023:2471-1SUSE-SU-2023:2470-1SUSE-SU-2023:2469-1SUSE-SU-2023:2343-1

  • python315 openSUSE Tumbleweed 3.15.0~a1-1.1
  • python314 openSUSE Tumbleweed 3.14.0~a1-1.1
  • python313 openSUSE Tumbleweed 3.13.0~b3-1.1
  • openssl-1_0_0 openSUSE Tumbleweed 1.0.2u-16.1
  • openssl-3 openSUSE Tumbleweed 3.1.1-1.1
  • openssl-1_1 openSUSE Tumbleweed 1.1.1u-1.1
  • python38 openSUSE Tumbleweed 3.8.17-1.2
  • python310 openSUSE Tumbleweed 3.10.12-1.1

opensuse advisories openSUSE-SU-2025:15713-1openSUSE-SU-2024:14434-1openSUSE-SU-2024:14109-1openSUSE-SU-2024:12966-1openSUSE-SU-2024:12969-1openSUSE-SU-2024:12972-1

  • edk2-ovmf AlmaLinux 9 20230524-3.el9
  • edk2-tools AlmaLinux 9 20230524-3.el9
  • edk2-aarch64 AlmaLinux 9 20230524-3.el9
  • openssl AlmaLinux 9 1:3.0.7-16.el9_2
  • openssl-libs AlmaLinux 9 1:3.0.7-16.el9_2
  • openssl-perl AlmaLinux 9 1:3.0.7-16.el9_2

almalinux advisories ALSA-2023:6330ALSA-2023:3722

  • openssl Alpine 3.16, Alpine 3.15 1.1.1u-r0
  • openssl Alpine 3.17 3.0.9-r0
  • openssl Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 3.1.1-r0
  • openssl3 Alpine 3.16, Alpine 3.15 3.0.9-r0

alpine advisories ALPINE-CVE-2023-2650

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openssl CBL-Mariner 2.0 1.1.1k-25
  • kata-containers-cc CBL-Mariner 2.0 0.4.1-2
  • edk2 CBL-Mariner 2.0, Azure Linux 3.0 20230301gitf80f052277c8-37
  • hvloader CBL-Mariner 2.0 1.0.1-9

azure linux advisories AZL-26984AZL-27009AZL-31144AZL-34667AZL-37674

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-2650 updated cvss 6.5

openssl: Possible DoS translating ASN.1 object identifiers

  • Red Hat Enterprise Linux 6 openssl, openssl-perl Red Hat Enterprise Linux 7 ovmf, OVMF, AAVMF, openssl, openssl-libs, openssl-perl
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 edk2, shim, openssl, shim-x64, edk2-ovmf, shim-aa64, +5 more Red Hat Enterprise Linux 9 shim, shim-x64, shim-aa64, compat-openssl11
    affected: no fix available “Fix deferred”
  • Red Hat JBoss Web Server 3 openssl
    affected: no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 9) edk2-ovmf 20230524-3.el9, edk2-tools 20230524-3.el9, edk2-aarch64 20230524-3.el9
    fixed: vendor fix RHSA-2023:6330
  • Red Hat Enterprise Linux AppStream (v. 9) edk2 20230524-3.el9, edk2-ovmf 20230524-3.el9, edk2-aarch64 20230524-3.el9, openssl-perl 3.0.7-16.el9_2 Red Hat Enterprise Linux BaseOS (v. 9) openssl 3.0.7-16.el9_2, openssl-libs 3.0.7-16.el9_2
    fixed: vendor fix RHSA-2023:3722
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2023:7626
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-openssl 1.1.1k-16.el7jbcs, jbcs-httpd24-openssl-libs 1.1.1k-16.el7jbcs, jbcs-httpd24-openssl-perl 1.1.1k-16.el7jbcs Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-openssl 1.1.1k-16.el8jbcs, jbcs-httpd24-openssl-libs 1.1.1k-16.el8jbcs, jbcs-httpd24-openssl-perl 1.1.1k-16.el8jbcs
    fixed: vendor fix RHSA-2023:7625
  • Red Hat JBoss Web Server 5
    fixed: vendor fix RHSA-2023:7623
show 2 more
  • Red Hat JBoss Web Server 5.7 for RHEL 7 Server jws5-tomcat-native 1.2.31-16.redhat_16.el7jws Red Hat JBoss Web Server 5.7 for RHEL 8 jws5-tomcat-native 1.2.31-16.redhat_16.el8jws Red Hat JBoss Web Server 5.7 for RHEL 9 jws5-tomcat-native 1.2.31-16.redhat_16.el9jws
    fixed: vendor fix RHSA-2023:7622
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl 8.4.0-2.el7jbcs, jbcs-httpd24-httpd 2.4.57-7.el7jbcs, jbcs-httpd24-libcurl 8.4.0-2.el7jbcs, jbcs-httpd24-mod_md 2.4.24-2.el7jbcs, jbcs-httpd24-mod_ssl 2.4.57-7.el7jbcs, jbcs-httpd24-mod_ldap 2.4.57-7.el7jbcs, +20 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl 8.4.0-2.el8jbcs, jbcs-httpd24-httpd 2.4.57-7.el8jbcs, jbcs-httpd24-libcurl 8.4.0-2.el8jbcs, jbcs-httpd24-mod_md 2.4.24-2.el8jbcs, jbcs-httpd24-mod_ssl 2.4.57-7.el8jbcs, jbcs-httpd24-mod_ldap 2.4.57-7.el8jbcs, +20 more Red Hat JBoss Web Server 5.7 for RHEL 7 Server jws5-tomcat 9.0.62-19.redhat_00017.1.el7jws, jws5-tomcat-lib 9.0.62-19.redhat_00017.1.el7jws, jws5-tomcat-javadoc 9.0.62-19.redhat_00017.1.el7jws, jws5-tomcat-selinux 9.0.62-19.redhat_00017.1.el7jws, jws5-tomcat-webapps 9.0.62-19.redhat_00017.1.el7jws, jws5-tomcat-java-jdk8 9.0.62-19.redhat_00017.1.el7jws, +6 more Red Hat JBoss Web Server 5.7 for RHEL 8 jws5-tomcat 9.0.62-19.redhat_00017.1.el8jws, jws5-tomcat-lib 9.0.62-19.redhat_00017.1.el8jws, jws5-tomcat-javadoc 9.0.62-19.redhat_00017.1.el8jws, jws5-tomcat-selinux 9.0.62-19.redhat_00017.1.el8jws, jws5-tomcat-webapps 9.0.62-19.redhat_00017.1.el8jws, jws5-tomcat-el-3.0-api 9.0.62-19.redhat_00017.1.el8jws, +4 more Red Hat JBoss Web Server 5.7 for RHEL 9 jws5-tomcat 9.0.62-19.redhat_00017.1.el9jws, jws5-tomcat-lib 9.0.62-19.redhat_00017.1.el9jws, jws5-tomcat-javadoc 9.0.62-19.redhat_00017.1.el9jws, jws5-tomcat-selinux 9.0.62-19.redhat_00017.1.el9jws, jws5-tomcat-webapps 9.0.62-19.redhat_00017.1.el9jws, jws5-tomcat-el-3.0-api 9.0.62-19.redhat_00017.1.el9jws, +4 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-24-184-03 updated cvss 3.7

Mitsubishi Electric Iconics Digital Solutions and Mitsubishi Electric Products (Update E)

  • Mitsubishi Electric Iconics Digital Solutions AnalytiX 10.97.2
    affected: vendor fix, mitigation iconics.com
  • Mitsubishi Electric AnalytiX 10.97.2
    affected: vendor fix, mitigation mitsubishielectric.com
  • Mitsubishi Electric Iconics Digital Solutions GENESIS64 10.97.2
    affected: vendor fix, mitigation iconics.com
  • Mitsubishi Electric GENESIS64 10.97.2
    affected: vendor fix, mitigation mitsubishielectric.com
  • Mitsubishi Electric Iconics Digital Solutions Hyper Historian 10.97.2
    affected: vendor fix, mitigation iconics.com
  • Mitsubishi Electric Hyper Historian 10.97.2
    affected: vendor fix, mitigation mitsubishielectric.com
  • Mitsubishi Electric Iconics Digital Solutions ICONICS Suite 10.97.2
    affected: vendor fix, mitigation iconics.com
  • Mitsubishi Electric ICONICS Suite 10.97.2
    affected: vendor fix, mitigation mitsubishielectric.com
show 2 more
  • Mitsubishi Electric Iconics Digital Solutions MobileHMI 10.97.2
    affected: vendor fix, mitigation iconics.com
  • Mitsubishi Electric MobileHMI 10.97.2
    affected: vendor fix, mitigation mitsubishielectric.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-348-10 updated cvss 6.5

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-24-158-03 updated cvss 2.7

Mitsubishi Electric CC-Link IE TSN Industrial Managed Switch

  • Mitsubishi Electric NZ2MHG-TSNT4 <=05 Mitsubishi Electric NZ2MHG-TSNT8F2 <=05
    affected: vendor fix, mitigation “Mitsubishi Electric recommends users to update to the fixed versions by following the steps below.” mitsubishielectric.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

cisa ICSA-23-320-08 updated cvss 6.5

Siemens SCALANCE Family Products

  • Siemens SCALANCE XB205-3 (SC, PN) (6GK5205-3BB00-2AB2) <V4.5 Siemens SCALANCE XB205-3 (ST, E/IP) (6GK5205-3BB00-2TB2) <V4.5 Siemens SCALANCE XB205-3 (ST, E/IP) (6GK5205-3BD00-2TB2) <V4.5 Siemens SCALANCE XB205-3 (ST, PN) (6GK5205-3BD00-2AB2) <V4.5 Siemens SCALANCE XB205-3LD (SC, E/IP) (6GK5205-3BF00-2TB2) <V4.5 Siemens SCALANCE XB205-3LD (SC, PN) (6GK5205-3BF00-2AB2) <V4.5
    +34 more products
    Siemens SCALANCE XB208 (E/IP) (6GK5208-0BA00-2TB2) <V4.5 Siemens SCALANCE XB208 (PN) (6GK5208-0BA00-2AB2) <V4.5 Siemens SCALANCE XB213-3 (SC, E/IP) (6GK5213-3BD00-2TB2) <V4.5 Siemens SCALANCE XB213-3 (SC, PN) (6GK5213-3BD00-2AB2) <V4.5 Siemens SCALANCE XB213-3 (ST, E/IP) (6GK5213-3BB00-2TB2) <V4.5 Siemens SCALANCE XB213-3 (ST, PN) (6GK5213-3BB00-2AB2) <V4.5 Siemens SCALANCE XB213-3LD (SC, E/IP) (6GK5213-3BF00-2TB2) <V4.5 Siemens SCALANCE XB213-3LD (SC, PN) (6GK5213-3BF00-2AB2) <V4.5 Siemens SCALANCE XB216 (E/IP) (6GK5216-0BA00-2TB2) <V4.5 Siemens SCALANCE XB216 (PN) (6GK5216-0BA00-2AB2) <V4.5 Siemens SCALANCE XC206-2 (SC) (6GK5206-2BD00-2AC2) <V4.5 Siemens SCALANCE XC206-2 (ST/BFOC) (6GK5206-2BB00-2AC2) <V4.5 Siemens SCALANCE XC206-2G PoE (6GK5206-2RS00-2AC2) <V4.5 Siemens SCALANCE XC206-2G PoE (54 V DC) (6GK5206-2RS00-5AC2) <V4.5 Siemens SCALANCE XC206-2G PoE EEC (54 V DC) (6GK5206-2RS00-5FC2) <V4.5 Siemens SCALANCE XC206-2SFP (6GK5206-2BS00-2AC2) <V4.5 Siemens SCALANCE XC206-2SFP EEC (6GK5206-2BS00-2FC2) <V4.5 Siemens SCALANCE XC206-2SFP G (6GK5206-2GS00-2AC2) <V4.5 Siemens SCALANCE XC206-2SFP G (EIP DEF.) (6GK5206-2GS00-2TC2) <V4.5 Siemens SCALANCE XC206-2SFP G EEC (6GK5206-2GS00-2FC2) <V4.5 Siemens SCALANCE XC208 (6GK5208-0BA00-2AC2) <V4.5 Siemens SCALANCE XC208EEC (6GK5208-0BA00-2FC2) <V4.5 Siemens SCALANCE XC208G (6GK5208-0GA00-2AC2) <V4.5 Siemens SCALANCE XC208G (EIP def.) (6GK5208-0GA00-2TC2) <V4.5 Siemens SCALANCE XC208G EEC (6GK5208-0GA00-2FC2) <V4.5 Siemens SCALANCE XC208G PoE (6GK5208-0RA00-2AC2) <V4.5 Siemens SCALANCE XC208G PoE (54 V DC) (6GK5208-0RA00-5AC2) <V4.5 Siemens SCALANCE XC216 (6GK5216-0BA00-2AC2) <V4.5 Siemens SCALANCE XC216-3G PoE (6GK5216-3RS00-2AC2) <V4.5 Siemens SCALANCE XC216-3G PoE (54 V DC) (6GK5216-3RS00-5AC2) <V4.5 Siemens SCALANCE XC216-4C (6GK5216-4BS00-2AC2) <V4.5 Siemens SCALANCE XC216-4C G (6GK5216-4GS00-2AC2) <V4.5 Siemens SCALANCE XC216-4C G (EIP Def.) (6GK5216-4GS00-2TC2) <V4.5 Siemens SCALANCE XC216-4C G EEC (6GK5216-4GS00-2FC2) <V4.5
    affected: fixed in V4.5 support.industry.siemens.com

31 more affected in the full advisory

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

75.36% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia OpenSSL_jll
<1.1.21+0
>=3.0.8+0, <3.0.9+0
1.1.21+0
3.0.9+0
julia Openresty_jll
<1.27.1+0
1.27.1+0

Affected products

  • OpenSSL OpenSSL
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.