CVE-2010-4021

NameCVE-2010-4021
DescriptionThe Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a "KrbFastReq forgery issue."
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitylow

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
krb5 (PTS)stretch1.15-1+deb9u1fixed
stretch (security)1.15-1+deb9u2fixed
buster1.17-3+deb10u1fixed
buster (security)1.17-3+deb10u2fixed
bullseye1.18.3-6fixed
bookworm, sid1.18.3-7fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
krb5sourcelenny(not affected)
krb5source(unstable)1.8+dfsg~alpha1-1

Notes

[lenny] - krb5 <not-affected> (Only affects 1.7.x)

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