CVE-2023-27043

NameCVE-2023-27043
DescriptionThe email module of Python through 3.11.3 incorrectly parses e-mail addresses that contain a special character. The wrong portion of an RFC2822 header is identified as the value of the addr-spec. In some applications, an attacker can bypass a protection mechanism in which application access is granted only after verifying receipt of e-mail to a specific domain (e.g., only @company.example.com addresses may be used for signup). This occurs in email/_parseaddr.py in recent versions of Python.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1059298, 1059299, 1072179

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pypy3 (PTS)buster7.0.0+dfsg-3vulnerable
bullseye (security), bullseye7.3.5+dfsg-2+deb11u2vulnerable
bookworm7.3.11+dfsg-2+deb12u1vulnerable
sid, trixie7.3.16+dfsg-2vulnerable
python2.7 (PTS)jessie, jessie (lts)2.7.9-2-ds1-1+deb8u12vulnerable
stretch (security)2.7.13-2+deb9u6vulnerable
stretch (lts), stretch2.7.13-2+deb9u9vulnerable
buster2.7.16-2+deb10u1vulnerable
buster (security)2.7.16-2+deb10u4vulnerable
bullseye2.7.18-8+deb11u1vulnerable
python3.11 (PTS)bookworm3.11.2-6vulnerable
sid, trixie3.11.9-1vulnerable
python3.12 (PTS)trixie3.12.3-1vulnerable
sid3.12.4-1vulnerable
python3.4 (PTS)jessie, jessie (lts)3.4.2-1+deb8u17vulnerable
python3.5 (PTS)stretch (security)3.5.3-1+deb9u5vulnerable
stretch (lts), stretch3.5.3-1+deb9u9vulnerable
python3.7 (PTS)buster3.7.3-2+deb10u3vulnerable
buster (security)3.7.3-2+deb10u7vulnerable
python3.9 (PTS)bullseye3.9.2-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pypy3source(unstable)(unfixed)1072179
python2.7source(unstable)(unfixed)
python3.10source(unstable)(unfixed)
python3.11source(unstable)(unfixed)1059298
python3.12source(unstable)(unfixed)1059299
python3.4source(unstable)(unfixed)
python3.5source(unstable)(unfixed)
python3.7source(unstable)(unfixed)
python3.9source(unstable)(unfixed)

Notes

[bookworm] - python3.11 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
[bullseye] - python3.9 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
[buster] - python3.7 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
[bullseye] - python2.7 <ignored> (Unsupported in Bullseye, only included to build a few applications)
[buster] - python2.7 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
[bookworm] - pypy3 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
[bullseye] - pypy3 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
[buster] - pypy3 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
https://github.com/python/cpython/issues/102988
[stretch] - python2.7 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
[jessie] - python2.7 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
[jessie] - python3.4 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)
[stretch] - python3.5 <postponed> (Minor issue, wait until upstream has decided whether to backport to older branches)

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