DescriptionPySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.
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 severitymedium
Debian Bugs859135

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python-pysaml2 (PTS)stretch3.0.0-5+deb9u1vulnerable
stretch (security)3.0.0-5+deb9u2vulnerable
buster, buster (security)4.5.0-4+deb10u1vulnerable
bookworm, bullseye, sid6.5.1-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bullseye] - python-pysaml2 <no-dsa> (Minor issue)
[buster] - python-pysaml2 <no-dsa> (Minor issue)
[stretch] - python-pysaml2 <no-dsa> (Minor issue)
[jessie] - python-pysaml2 <no-dsa> (Minor issue)
A proper fix for this issue would be to fix the underlying issue in src:libxml2 (for the scope of the CVE)

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