Vulnerability · Published Oct 21, 2021 · Assigned by mitre
CVE-2021-42097
High 8.0
In plain English
A high-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 1.3% (higher than 71% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)8.0High
Exploit odds (30 days)1.3%top 28.8% 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 csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account, and then use that value in a CSRF attack against an admin (e.g., for account takeover).
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/1947640 x_refsource_CONFIRM
- [oss-security] 20211021 Mailman 2.1.35 security release mailing-list, x_refsource_MLIST
- DSA-4991 vendor-advisory, x_refsource_DEBIAN