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Vulnerability · Published Feb 4, 2020 · Assigned by mitre

CVE-2020-8517

High 7.5

In plain English

A high-severity security flaw in the squid package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 6.8% (higher than 94% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.5High
Exploit odds (30 days)6.8%top 5.9% 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 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20squid4.10-r0ALPINE-CVE-2020-8517
Alpine:v3.21squid4.10-r0ALPINE-CVE-2020-8517
Alpine:v3.22squid4.10-r0ALPINE-CVE-2020-8517
Alpine:v3.23squid4.10-r0ALPINE-CVE-2020-8517
Alpine:v3.24squid4.10-r0ALPINE-CVE-2020-8517
Debian:12squid4.10-1DEBIAN-CVE-2020-8517
Debian:13squid4.10-1DEBIAN-CVE-2020-8517
Debian:14squid4.10-1DEBIAN-CVE-2020-8517

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References