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Vulnerability · Published Apr 30, 2020 · Assigned by redhat

CVE-2020-1752

High 7.0

In plain English

A high-severity use-after-free in glibc from GNU Libc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.5%top 53.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12glibc2.30-3DEBIAN-CVE-2020-1752
Debian:13glibc2.30-3DEBIAN-CVE-2020-1752
Debian:14glibc2.30-3DEBIAN-CVE-2020-1752

Affected products (as reported)

VendorProductVersions
GNU Libc glibc Affected: versions 2.14 and laterFixed: version 2.32

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References