CVE-2013-4420

Multiple directory traversal vulnerabilities in the (1) tar_extract_glob and (2) tar_extract_all functions in libtar 1.2.20 and earlier allow remote attackers to overwrite arbitrary files via a .. (dot dot) in a crafted tar file.

Published: 2014-02-20 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4420 is rated Moderate Risk (43.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.38%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-4420

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-06 0.60% 0.38% -0.22%
2 2025-08-11 0.44% 0.60% +0.16%
3 2025-05-19 — 0.44% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4420

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2013-4420

OS Trackers for CVE-2013-4420

vendor priority summary link
alpine — CVE-2013-4420: 1 source package rows (libtar); 2 state rows across 2 repos (3.17-community, 3.18-community); fixed 0, open 2. https://security.alpinelinux.org/vuln/CVE-2013-4420
debian not yet assigned CVE-2013-4420 not yet assigned priority: Debian including 1 source packages (libtar), 2 status rows across 2 suites (bookworm, bullseye): resolved 2. https://security-tracker.debian.org/tracker/CVE-2013-4420
redhat low — https://access.redhat.com/security/cve/CVE-2013-4420
ubuntu medium CVE-2013-4420 medium priority: Ubuntu including 1 source packages (libtar), 13 status rows across 13 suites (lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 8, not-affected 3, DNE 1, released 1. https://ubuntu.com/security/CVE-2013-4420

Affected software / configurations for CVE-2013-4420

Vendor Product Version Raw CPE
feep libtar <= 1.2.20 cpe:2.3:a:feep:libtar:*:*:*:*:*:*:*:*
feep libtar 1.2.11 cpe:2.3:a:feep:libtar:1.2.11:*:*:*:*:*:*:*
feep libtar 1.2.13 cpe:2.3:a:feep:libtar:1.2.13:*:*:*:*:*:*:*
feep libtar 1.2.14 cpe:2.3:a:feep:libtar:1.2.14:*:*:*:*:*:*:*
feep libtar 1.2.15 cpe:2.3:a:feep:libtar:1.2.15:*:*:*:*:*:*:*
feep libtar 1.2.16 cpe:2.3:a:feep:libtar:1.2.16:*:*:*:*:*:*:*
feep libtar 1.2.17 cpe:2.3:a:feep:libtar:1.2.17:*:*:*:*:*:*:*
feep libtar 1.2.18 cpe:2.3:a:feep:libtar:1.2.18:*:*:*:*:*:*:*
feep libtar 1.2.19 cpe:2.3:a:feep:libtar:1.2.19:*:*:*:*:*:*:*

References for CVE-2013-4420

cvelogic Threat Intelligence