PT-2018-2637 · Gnu+2 · Gnu Libextractor+2

Published 2018-12-24 · Updated 2020-11-23 · CVE-2018-20430

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions GNU Libextractor versions prior to 1.9

Description The issue is related to an out-of-bounds read in the history extract() function in plugins/ole2 extractor.c, which is connected to EXTRACTOR common convert to utf8 in common/convert.c. Additionally, the process metadata function in ole2 extractor.c is also associated with this out-of-bounds read problem. This could potentially allow a remote attacker to cause a denial of service or disclose protected information.

Recommendations For GNU Libextractor versions prior to 1.9, consider updating to a version that includes a fix for this issue, as no specific workaround is provided for these versions. As a temporary workaround, consider disabling the history extract() function in plugins/ole2 extractor.c until a patch is available. Restrict access to the ole2 extractor.c module to minimize the risk of exploitation.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2019-1218

BDU:2019-01254

CVE-2018-20430

DLA-1616-1

DSA-4361-1

MGASA-2019-0013

USN-4641-1

Affected Products

Alt Linux

Gnu Libextractor

Ubuntu

References · 33

• 🔥 https://gnunet.org/bugs/view.php?id=5493 · Exploit
• https://debian.org/security/2018/dsa-4361 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-20430 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-17440 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20430 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-15266 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-01254 · Security Note
• https://ubuntu.com/security/CVE-2017-15602 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4641-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-20430 · Security Note
• https://ubuntu.com/security/CVE-2017-15922 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-14347 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0013 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1616-1 · Vendor Advisory
• https://gnunet.org/git/libextractor.git/commit/?id=b405d707b36e0654900cba78e89f49779efea110 · Patch