PT-2020-6127 · Gnu+6 · Glibc+6

Published 2020-01-17 · Updated 2024-06-15 · CVE-2020-1752

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions glibc versions 2.14 through 2.31

Description A use-after-free issue was found in the way tilde expansion was carried out, affecting directory paths with an initial tilde followed by a valid username. This could potentially lead to arbitrary code execution when a specially crafted path is processed by the glob function. A local attacker could exploit this flaw to gain elevated privileges.

Recommendations For glibc versions 2.14 through 2.31, update to version 2.32 to resolve the issue. As a temporary workaround, consider restricting the use of the glob function until a patch is available.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2020-2070

ALT-PU-2020-3327

ALT-PU-2020-3401

ALT-PU-2021-3034

BDU:2021-03122

CESA-2020_4444

CVE-2020-1752

DLA-3152-1

MGASA-2020-0135

OPENSUSE-SU-2020:0467-1

OPENSUSE-SU-2020_0467-1

OPENSUSE-SU-2024:10792-1

RHSA-2020:4444

RHSA-2020_4444

SUSE-SU-2020:0820-1

SUSE-SU-2020:0832-1

SUSE-SU-2020_0820-1

SUSE-SU-2022:1123-1

SUSE-SU-2022_1123-1

USN-4416-1

Affected Products

Alt Linux

Astra Linux

Centos

Red Hat

Suse

Ubuntu

Glibc

References · 92

• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9169 · Vendor Advisory
• https://usn.ubuntu.com/4416-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-11237 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10792-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2020-0135.html · Security Note
• https://ubuntu.com/security/CVE-2020-10029 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-1752 · Security Note
• https://ubuntu.com/security/CVE-2018-11236 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-19591 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-1752 · Security Note
• https://ubuntu.com/security/CVE-2018-6485 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:0467-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20241017SE16 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2020-4444.html · Vendor Advisory