CVE-2008-0177: The ipcomp6_input function in sys/netinet6/ipcomp_input.c in the KAME project before 20071201 does not properl

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HIGH 7.8MITIGATE

CVE-2008-0177 is a high-severity flaw (CVSS 7.8) affecting ipcomp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ipcomp6_input function in sys/netinet6/ipcomp_input.c in the KAME project before 20071201 does not properly check the return value of the m_pulldown function, which allows remote attackers to cause a denial of service (system crash) via an IPv6 packet with an IPComp header.

Why this priority

High severity
EPSS top 3%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	15.5% (top 3%)
CISA exploited list	No
Published	2008-02-07
Last modified	2026-06-16

Publisher (CNA): CERT/CC · Vendor: kame

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2008-02-07 22:00 UTCPublished CVE record published
2026-06-16 22:49 UTCUpdated Record last modified

kame ipcomp MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ipcomp || rpm -q ipcomp || ipcomp --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Apple Mac OSX xnu 1228.3.13 - IPv6-ipcomp Remote kernel Denial of Service (PoC)

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2008-0177?

ipcomp: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2008-0177 being exploited?

CVE-2008-0177 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2008-0177 affect?

CVE-2008-0177 affects ipcomp. Severity is high (CVSS 7.8). The ipcomp6_input function in sys/netinet6/ipcomp_input.c in the KAME project before 20071201 does not properly check the return value of the m_pulldown function, which allows remote attackers to cause a denial of service (system crash) via

How urgent is CVE-2008-0177?

Priority 57/100. High severity; EPSS top 3%: very likely to be exploited; Public exploit reference

References

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