CVE-2016-6515

NameCVE-2016-6515
DescriptionThe auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1500-1, DLA-594-1
Debian Bugs833823

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssh (PTS)jessie, jessie (lts)1:6.7p1-5+deb8u10fixed
stretch (security)1:7.4p1-10+deb9u6fixed
stretch (lts), stretch1:7.4p1-10+deb9u9fixed
buster (security), buster, buster (lts)1:7.9p1-10+deb10u4fixed
bullseye (security), bullseye1:8.4p1-5+deb11u3fixed
bookworm (security), bookworm1:9.2p1-2+deb12u3fixed
sid, trixie1:9.9p1-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensshsourcewheezy1:6.0p1-4+deb7u6DLA-594-1
opensshsourcejessie1:6.7p1-5+deb8u6DLA-1500-1
opensshsource(unstable)1:7.3p1-1833823

Notes

Fixed by: https://anongit.mindrot.org/openssh.git/commit/?id=fcd135c9df440bcd2d5870405ad3311743d78d97

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