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Fencer Vulns
high 7.5

CVE-2019-9923 json

pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed exten…

published 2019-03-22 7 y ago modified 2026-10-14 25 d ago also EUVD-2019-19278

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers.

Patch / fix

  • 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 14, Debian 13, Debian 12 1.32+dfsg-1

debian advisories DEBIAN-CVE-2019-9923

  • tar Ubuntu 16.04 LTS 1.28-2.1ubuntu0.2
  • tar Ubuntu 18.04 LTS 1.29b-2ubuntu0.2
  • tar Ubuntu 20.04 LTS 1.30+dfsg-7ubuntu0.20.04.1
  • tar Ubuntu Pro 14.04 LTS 1.27.1-1ubuntu0.1+esm1

ubuntu advisories UBUNTU-CVE-2019-9923

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 SLE Real Time 15 SP2, SLE Module for Basesystem 15 SP3, SLE Micro 5.2 +3 more 1.34-150000.3.12.1
  • tar SLES for SAP 12 SP5, SLES 12 SP5 1.27.1-15.6.3
  • tar SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 1.27.1-14.8.1
  • tar SLE Module for Basesystem 15 1.30-3.3.2

suse advisories SUSE-SU-2022:1548-1SUSE-SU-2020:2806-1SUSE-SU-2019:14215-1SUSE-SU-2019:0926-1

  • tar openSUSE Tumbleweed 1.34-2.2
  • tar openSUSE Leap 15.0 1.30-lp150.7.1

opensuse advisories openSUSE-SU-2024:11422-1openSUSE-SU-2019:1237-1

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-2019-9923 updated cvss 3.3

tar: null-pointer dereference in pax_decode_header in sparse.c

  • Red Hat Enterprise Linux 6 tar
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 7 tar Red Hat Enterprise Linux 8 tar
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 5 tar
    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-23-348-10 updated cvss 7.5

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-24-284-16 updated cvss 7.5

Rockwell Automation DataMosaix Private Cloud

  • Rockwell Automation DataMosaix Private Cloud <=7.07
    affected: mitigation “Rockwell Automation encourages users to implement security best practices to minimize the risk of the vulnerability.” rockwellautomation.custhelp.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 SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
15 mo ago

Exploit prediction

3.15% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

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.