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Vulnerability · Published Apr 23, 2020 · Assigned by mitre

CVE-2020-11945

Critical 9.8

In plain English

A critical-severity security flaw in the libecap package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 27.2% (higher than 98% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)27.2%top 1.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2020:2041
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2020:2041
Debian:12squid4.11-1DEBIAN-CVE-2020-11945
Debian:13squid4.11-1DEBIAN-CVE-2020-11945
Debian:14squid4.11-1DEBIAN-CVE-2020-11945
Rocky Linux:8libecap0:1.0.1-2.module+el8.4.0+404+316a0dc5RLSA-2020:2041

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References