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Fencer Vulns
medium 5.3

CVE-2023-2975 json

AES-SIV implementation ignores empty associated data entries

published 2023-07-14 3 y ago modified 2026-07-25 3 mo ago also EUVD-2023-34417 , GHSA-hpqg-7fjp-436p , JLSEC-2026-240

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

Issue summary: The AES-SIV cipher implementation contains a bug that causes it to ignore empty associated data entries which are unauthenticated as a consequence.

Impact summary: Applications that use the AES-SIV algorithm and want to authenticate empty data entries as associated data can be misled by removing, adding or reordering such empty entries as these are ignored by the OpenSSL implementation. We are currently unaware of any such applications.

The AES-SIV algorithm allows for authentication of multiple associated data entries along with the encryption. To authenticate empty data the application has to call EVP_EncryptUpdate() (or EVP_CipherUpdate()) with NULL pointer as the output buffer and 0 as the input buffer length. The AES-SIV implementation in OpenSSL just returns success for such a call instead of performing the associated data authentication operation. The empty data thus will not be authenticated.

As this issue does not affect non-empty associated data authentication and we expect it to be rare for an application to use empty associated data entries this is qualified as Low severity issue.

Patch / fix

  • julia OpenSSL_jll 3.0.10+0
  • OpenSSL OpenSSL 3.0.10, 3.1.2
  • openssl Debian 12 3.0.10-1~deb12u1
  • openssl Debian 14, Debian 13 3.0.10-1

debian advisories DEBIAN-CVE-2023-2975

  • openssl Ubuntu 22.04 LTS 3.0.2-0ubuntu1.12
  • openssl Ubuntu Pro FIPS-updates 22.04 LTS, Ubuntu Pro FIPS-preview 22.04 LTS 3.0.2-0ubuntu1.12+Fips1

ubuntu advisories UBUNTU-CVE-2023-2975

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

  • openssl RHEL 9 1:3.0.7-27.el9
  • openssl-libs RHEL 9 1:3.0.7-27.el9
  • openssl-perl RHEL 9 1:3.0.7-27.el9

red hat advisories RHSA-2024:2447

  • openssl-3 SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 3.0.8-150400.4.31.2
  • openssl-3 SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 3.0.8-150500.5.8.1

suse advisories SUSE-SU-2023:3013-1SUSE-SU-2023:3011-1

  • openssl-3 openSUSE Tumbleweed 3.1.1-3.1

opensuse advisories openSUSE-SU-2024:13065-1

  • openssl AlmaLinux 9 1:3.0.7-27.el9
  • openssl-libs AlmaLinux 9 1:3.0.7-27.el9
  • openssl-perl AlmaLinux 9 1:3.0.7-27.el9

almalinux advisories ALSA-2024:2447

  • openssl Alpine 3.17 3.0.9-r2
  • openssl Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 3.1.1-r2
  • openssl3 Alpine 3.16, Alpine 3.15 3.0.9-r1

alpine advisories ALPINE-CVE-2023-2975

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

  • hvloader CBL-Mariner 2.0 1.0.1-6

azure linux advisories AZL-47652

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-2023-2975 updated cvss 5.3

openssl: AES-SIV cipher implementation contains a bug that causes it to ignore empty associated data entries

  • Red Hat JBoss Enterprise Application Platform 6 openssl
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 9) openssl-perl 3.0.7-27.el9 Red Hat Enterprise Linux BaseOS (v. 9) openssl 3.0.7-27.el9, openssl-libs 3.0.7-27.el9
    fixed: vendor fix RHSA-2024:2447
  • Red Hat Cryostat 2 openssl Red Hat Enterprise Linux 6 openssl, openssl-perl Red Hat Enterprise Linux 7 ovmf, OVMF, AAVMF, openssl, openssl-libs, openssl-perl Red Hat Enterprise Linux 8 edk2, shim, openssl, shim-x64, edk2-ovmf, shim-aa64, +9 more Red Hat Enterprise Linux 9 edk2, shim, shim-x64, edk2-ovmf, shim-aa64, edk2-tools, +2 more Red Hat Enterprise Linux BaseOS (v. 9) openssl-fips-provider 3.0.7-2.el9
    +2 more products
    Red Hat JBoss Core Services jbcs-httpd24-openssl jbcs-httpd24-openssl Red Hat JBoss Web Server 5 openssl
    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-25-100-02 updated cvss 5.3

Siemens SIDIS Prime

  • Siemens SIDIS Prime <V4.0.700
    affected: fixed in V4.0.700

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
yes
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
julia OpenSSL_jll
>=3.0.8+0, <3.0.10+0
3.0.10+0

Affected products

  • OpenSSL OpenSSL

Classification

Weakness
  • CWE-354 Improper Validation of Integrity Check Value
  • CWE-287 Improper Authentication
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.

CPEs and fixed versions use Anchore's correction of NVD's data: Improve version ranges to indicate fix.