CVE-2010-0308

CVE-2010-0308 is a medium-severity vulnerability in Squid-cache Squid with a CVSS 2.0 base score of 4.0. Its EPSS exploit-prediction score of 23% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

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.

Frequently asked questions

What is CVE-2010-0308?
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.
How severe is CVE-2010-0308?
CVE-2010-0308 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2010-0308 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-0308?
CVE-2010-0308 primarily affects Squid-cache Squid. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-0308?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-0308 published?
CVE-2010-0308 was published on 2010-02-03 and last updated on 2026-06-16.

References

Affected products (46)

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