Vulnerability · Published Oct 21, 2021 · Assigned by mitre
CVE-2021-42096
Medium 4.3
In plain English
A medium-severity security flaw in the mailman package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 70% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.3Medium
Exploit odds (30 days)1.2%top 30.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | mailman | 3:2.1.29-12.module_el8.5.0+26+48d4c9ee.2 | ALSA-2021:4826 |
| AlmaLinux:8 | mailman | 3:2.1.29-12.module_el8.5.0+2601+e8845b76.1 | ALSA-2021:4826 |
| AlmaLinux:8 | mailman | 3:2.1.29-12.module_el8.5.0+2602+327eb9f3.2 | ALSA-2021:4826 |
| Rocky Linux:8 | mailman | 3:2.1.29-12.module+el8.5.0+717+27fd1ba7.2 | RLSA-2021:4826 |
| Rocky Linux:8 | mailman | 3:2.1.29-12.module+el8.5.0+703+19300c10 | RLSA-2021:4826 |
Affected products (as reported)
References
- https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/ x_refsource_CONFIRM
- https://bugs.launchpad.net/mailman/+bug/1947639 x_refsource_CONFIRM
- [oss-security] 20211021 Mailman 2.1.35 security release mailing-list, x_refsource_MLIST
- DSA-4991 vendor-advisory, x_refsource_DEBIAN