| Name | CVE-2023-27043 |
| Description | The 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1059298, 1059299 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| python2.7 (PTS) | buster | 2.7.16-2+deb10u1 | vulnerable |
| buster (security) | 2.7.16-2+deb10u4 | vulnerable |
| bullseye | 2.7.18-8+deb11u1 | vulnerable |
| python3.11 (PTS) | bookworm | 3.11.2-6 | vulnerable |
| trixie | 3.11.8-1 | vulnerable |
| sid | 3.11.9-1 | vulnerable |
| python3.12 (PTS) | trixie | 3.12.2-1 | vulnerable |
| sid | 3.12.3-1 | vulnerable |
| python3.7 (PTS) | buster | 3.7.3-2+deb10u3 | vulnerable |
| buster (security) | 3.7.3-2+deb10u7 | vulnerable |
| python3.9 (PTS) | bullseye | 3.9.2-1 | vulnerable |
The information below is based on the following data on fixed versions.
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)
https://github.com/python/cpython/issues/102988