PT-2021-7965 · Elfutils+4 · Elfutils+4

Published 2021-03-03 · Updated 2023-08-30 · CVE-2021-33294

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Elfutils versions 0.183

Description The issue is related to the handle symtab function in the readelf.c component of the Elfutils utility for modifying and analyzing ELF binary files. It involves an infinite loop with an unreachable exit condition. Exploitation of this issue can allow an attacker to cause a denial of service using a specially crafted file.

Recommendations For Elfutils version 0.183, consider avoiding the use of the handle symtab function in readelf.c until a patch is available. As a temporary workaround, restrict the use of the readelf utility to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

BDU:2023-07670

CVE-2021-33294

OESA-2023-1444

OESA-2023-1445

USN-6322-1

Affected Products

Astra Linux

Debian

Elfutils

Linuxmint

Ubuntu

References · 29

• 🔥 https://sourceware.org/bugzilla/show_bug.cgi?id=27501 · Exploit
• https://bdu.fstec.ru/vul/2023-07670 · Security Note
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2024-0416SE47 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-33294 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-33294 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-7149 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-16403 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-18310 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-16062 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2023-1445 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-33294 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-6322-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-6322-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-33294 · Security Note
• https://ubuntu.com/security/CVE-2019-7665 · Vendor Advisory