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Vulnerability · Published May 27, 2021 · Assigned by mitre

CVE-2021-28652

Medium 4.9

In plain English

A medium-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 4.3% (higher than 91% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)4.9Medium
Exploit odds (30 days)4.3%top 8.7% 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 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2021:4292
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2021:4292
AlmaLinux:8squid7:4.15-3.module_el8.6.0+3010+383bc947.1ALSA-2021:4292
Alpine:v3.20squid5.0.6-r0ALPINE-CVE-2021-28652
Alpine:v3.21squid5.0.6-r0ALPINE-CVE-2021-28652
Alpine:v3.22squid5.0.6-r0ALPINE-CVE-2021-28652
Alpine:v3.23squid5.0.6-r0ALPINE-CVE-2021-28652
Alpine:v3.24squid5.0.6-r0ALPINE-CVE-2021-28652
Debian:12squid4.13-10DEBIAN-CVE-2021-28652
Debian:13squid4.13-10DEBIAN-CVE-2021-28652
Debian:14squid4.13-10DEBIAN-CVE-2021-28652
Rocky Linux:8libecap0:1.0.1-2.module+el8.4.0+404+316a0dc5RLSA-2021:4292
Rocky Linux:8squid7:4.15-1.module+el8.5.0+705+218dec94RLSA-2021:4292

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References