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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2019-12525
HistoryJul 11, 2019 - 7:15 p.m.

CVE-2019-12525

2019-07-1119:15:00
Debian Security Bug Tracker
security-tracker.debian.org
15

0.162 Low

EPSS

Percentile

96.0%

An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token’s value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1.