Infinite loop in Libextractor - CVE-2018-14347

Vulnerability identifier: #VU15355

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-14347

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop in EXTRACTOR_mpeg_extract_method function in mpeg_extractor.c. A remote attacker use a specially crafted archive file to consume all available system resources and cause denial of service conditions.

Libextractor
libextractor (Debian package)
extract (Ubuntu package)
libextractor-dev (Ubuntu package)
libextractor3 (Ubuntu package)
Ubuntu

Install update from vendor's website.

Libextractor - update to 1.7
libextractor (Debian package) - update to 1:1.3-4+deb9u2
extract (Ubuntu package) - update to 1:1.3-4+deb9u3build0.16.04.1
libextractor-dev (Ubuntu package) - update to 1:1.3-4+deb9u3build0.16.04.1
libextractor3 (Ubuntu package) - update to 1:1.3-4+deb9u3build0.16.04.1

• http://lists.gnu.org/archive/html/bug-libextractor/2018-07/msg00000.html
• https://gnunet.org/bugs/view.php?id=5399
• https://gnunet.org/git/libextractor.git/commit/?id=f033468cd36e2b8bf92d747fbd683b2ace8da394
• https://lists.debian.org/debian-lts-announce/2018/08/msg00025.html
• https://www.debian.org/security/2018/dsa-4290

• Debian update for libextractor
• Ubuntu update for libextractor