Home/CVE/Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service v
CVE

CVE-2009-0478

Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service v

Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.

MEDIUM · CVSS 5 EPSS 0.77052
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

1
squidall versions
⚠

Public Exploits & PoCs

3
dosSquid < 3.1 5 - HTTP Version Number Parsing Denial of Serviceverified
pocwww.securityfocus.com · 33604www.securityfocus.com
pocwww.exploit-db.com · 8021www.exploit-db.com
◈

Detection Rules (IDS/IPS)

1
snort-communitySERVER-WEBAPP invalid HTTP version stringnon-standard-protocol
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
▣

Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published to NVD08 Feb 2009 · 10:30 PM
⚑

Vendor Advisories

1
usnUSN-724-1
🔗

References & Sources

10
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html
http://secunia.com/advisories/33731Vendor Advisory
http://secunia.com/advisories/34467Vendor Advisory
http://security.gentoo.org/glsa/glsa-200903-38.xml
http://www.mandriva.com/security/advisories?name=MDVSA-2009:034
http://www.securityfocus.com/archive/1/500653/100/0/threaded
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