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Fencer Intel
medium 6.8

CVE-2013-4397 json

Multiple integer overflows in the th_read function in lib/block.c in libtar before 1.2.20 allow remote attackers to cause a denial of servi…

published 2013-10-17 13 y ago modified 2026-06-16 4 mo ago also EUVD-2013-4276

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.5%
EPSS 5.5% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Multiple integer overflows in the th_read function in lib/block.c in libtar before 1.2.20 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long (1) name or (2) link in an archive, which triggers a heap-based buffer overflow.

Patch / fix

  • libtar Debian 12 1.2.20-1

debian advisories DEBIAN-CVE-2013-4397

  • libtar RHEL 6 1.2.11-17.el6_4.1

red hat advisories RHSA-2013:1418

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-2013-4397 updated cvss 5.1

libtar: Heap-based buffer overflows by expanding a specially-crafted archive

  • Red Hat Enterprise Linux Desktop (v. 6) libtar 1.2.11-17.el6_4.1 Red Hat Enterprise Linux Desktop Optional (v. 6) libtar 1.2.11-17.el6_4.1 Red Hat Enterprise Linux HPC Node (v. 6) libtar 1.2.11-17.el6_4.1 Red Hat Enterprise Linux HPC Node Optional (v. 6) libtar 1.2.11-17.el6_4.1 Red Hat Enterprise Linux Server (v. 6) libtar 1.2.11-17.el6_4.1 Red Hat Enterprise Linux Server Optional (v. 6) libtar 1.2.11-17.el6_4.1
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) libtar 1.2.11-17.el6_4.1 Red Hat Enterprise Linux Workstation Optional (v. 6) libtar 1.2.11-17.el6_4.1
    fixed: vendor fix RHSA-2013:1418
  • Red Hat Enterprise Linux 7 libtar
    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

Exploit prediction

5.49% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • repo.or.cz http://repo.or.cz/w/libtar.git/commitdiff/45448e8bae671c2f7e80b860ae0fc0cedf2bdc04 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel 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.