CVE-2020-15049
high-risk
Published 2020-06-30
An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.
Do I need to act?
!
15.7% chance of exploitation in next 30 days
EPSS score — higher than 84% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: 5ba5ba8c40cb11d62886ee60fe6c3646f815fdea, f4cfdb7a62168bef09f8cfa438c2a730206c82ed
9
CVSS 9.9/10
Critical
NETWORK
/ LOW complexity
Affected Vendors
References (20)
Third Party Advisory
https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5
Third Party Advisory
https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5
62
/ 100
high-risk
Severity
33/34 · Critical
Exploitability
13/34 · Low
Exposure
16/34 · Moderate