CVE-2010-0308 Denial of service in n/a
Remote attackers can cause a denial of service in Squid proxy servers by sending crafted DNS packets, requiring administrators to upgrade the software.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2010-0308?
CVE-2010-0308 is a medium-severity denial of service vulnerability in Squid-Cache Squid, published on 3 Feb 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
lib/rfc1035.c in Squid 2.x, 3.0 through 3.0.STABLE22, and 3.1 through 3.1.0.15 allows remote attackers to cause a denial of service (assertion failure) via a crafted DNS packet that only contains a header.
Weakness: CWE-20
Which versions are affected by CVE-2010-0308?
It affects 1 product.
Products include Squid-Cache Squid.
How do I fix CVE-2010-0308?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2010-0308 being exploited?
There is no known exploitation of CVE-2010-0308 in the wild and no public exploit code.
Other vulnerabilities in Squid-Cache Squid
- CVE-2025-62168 Squid vulnerable to information disclosure via authentication credential leakage in error handling
- CVE-2025-54574 Squid's URN Handling can lead to Buffer Overflow
- CVE-2026-33526 Squid vulnerable to Denial of Service in ICP Request handling
- CVE-2026-32748 Squid has Denial of Service in ICP Response handling
- CVE-2023-50269 SQUID-2023:10 Denial of Service in HTTP Request parsing
Sources
Also known as DEBIAN-CVE-2010-0308, GHSA-wg6g-7g6h-p73r.