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Fencer Vulns
medium 5.5

CVE-2022-48303 json

GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump.

published 2023-01-30 3 y ago modified 2026-10-14 25 d ago also EUVD-2022-51003 , JLSEC-2026-184

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The issue occurs in from_header in list.c via a V7 archive in which mtime has approximately 11 whitespace characters.

Patch / fix

  • julia Tar_jll 1.35.0+0
  • 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
  • tar Debian 12 1.34+dfsg-1.2+deb12u1
  • tar Debian 14, Debian 13 1.34+dfsg-1.4

debian advisories DEBIAN-CVE-2022-48303

  • tar Ubuntu 18.04 LTS 1.29b-2ubuntu0.4
  • tar Ubuntu 20.04 LTS 1.30+dfsg-7ubuntu0.20.04.3
  • tar Ubuntu 22.04 LTS 1.34+dfsg-1ubuntu0.1.22.04.1
  • tar Ubuntu Pro 14.04 LTS 1.27.1-1ubuntu0.1+esm3
  • tar Ubuntu Pro 16.04 LTS 1.28-2.1ubuntu0.2+esm2

ubuntu advisories UBUNTU-CVE-2022-48303

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

  • tar RHEL 9 2:1.34-6.el9_1
  • tar RHEL 8 2:1.30-6.el8_7.1
  • tar RHEL 8.6 EUS 2:1.30-5.el8_6.1

red hat advisories RHSA-2023:5610RHSA-2023:0959RHSA-2023:0842

  • tar SLE Real Time 15 SP3, SLE Module for Basesystem 15 SP4, SLE Micro 5.3 +5 more 1.34-150000.3.31.1
  • tar SLES for SAP 12 SP5, SLES 12 SP5 1.27.1-15.18.1

suse advisories SUSE-SU-2023:0463-1SUSE-SU-2023:0441-1

  • tar openSUSE Tumbleweed 1.34-10.1

opensuse advisories openSUSE-SU-2024:12744-1

  • tar AlmaLinux 9 2:1.34-6.el9_1
  • tar AlmaLinux 8 2:1.30-6.el8_7.1

almalinux advisories ALSA-2023:0959ALSA-2023:0842

  • tar Rocky Linux 9 2:1.34-6.el9_1
  • tar Rocky Linux 8 2:1.30-6.el8_7.1

rocky linux advisories RLSA-2023:0959RLSA-2023:0842

  • tar Alpine 3.16, Alpine 3.15, Alpine 3.14 1.34-r1
  • tar Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 1.34-r2

alpine advisories ALPINE-CVE-2022-48303

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

  • tar CBL-Mariner 2.0 1.34-3

azure linux advisories AZL-37145

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-2022-48303 updated cvss 5.5

tar: heap buffer overflow at from_header() in list.c via specially crafted checksum

  • Red Hat Enterprise Linux 6 tar
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 tar
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux BaseOS (v. 8) tar 1.30-6.el8_7.1
    fixed: vendor fix RHSA-2023:0842
  • Red Hat Enterprise Linux BaseOS (v. 9) tar 1.34-6.el9_1
    fixed: vendor fix RHSA-2023:0959
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) tar 1.30-5.el8_6.1
    fixed: vendor fix RHSA-2023:5610

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-23-348-10 updated cvss 5.5

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-24-046-11 updated cvss 5.5

Siemens SCALANCE XCM-/XRM-300

  • Siemens SCALANCE XCH328 (6GK5328-4TS01-2EC2) <V2.4 Siemens SCALANCE XCM324 (6GK5324-8TS01-2AC2) <V2.4 Siemens SCALANCE XCM328 (6GK5328-4TS01-2AC2) <V2.4 Siemens SCALANCE XCM332 (6GK5332-0GA01-2AC2) <V2.4 Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) (6GK5334-2TS01-2ER3) <V2.4 Siemens SCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3) <V2.4
    +5 more products
    Siemens SCALANCE XRM334 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3) <V2.4 Siemens SCALANCE XRM334 (24 V DC, 8xFO) (6GK5334-2TS01-2AR3) <V2.4 Siemens SCALANCE XRM334 (24 V DC, 12xFO) (6GK5334-3TS01-2AR3) <V2.4 Siemens SCALANCE XRM334 (230 V AC, 8xFO) (6GK5334-2TS01-3AR3) <V2.4 Siemens SCALANCE XRM334 (230 V AC, 12xFO) (6GK5334-3TS01-3AR3) <V2.4
    affected: fixed in V2.4 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 SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

1.49% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • savannah.gnu.org https://savannah.gnu.org/bugs/?62387 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
OSV 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia Tar_jll
<1.35.0+0
1.35.0+0

Affected products

  • 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

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.