Description
Sympa 6.2.38 through 6.2.52 allows remote attackers to cause a denial of service (disk consumption from temporary files, and a flood of notifications to listmasters) via a series of requests with malformed parameters.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | sympa | 6.2.40~dfsg-4 | — |
| Debian 13 | sympa | 6.2.40~dfsg-4 | — |
| Debian 12 | sympa | 6.2.40~dfsg-4 | — |
| Debian 10 | sympa | 6.2.40~dfsg-1+deb10u1 | DSA-4818-1 |
Advisories 1
- DSA-4818-1 sympa - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://sympa-community.github.io/security/2020-001.html
- https://github.com/sympa-community/sympa/issues/886
- FEDORA-2020-79516cb689 vendor-advisory
- FEDORA-2020-bb5aa250c9 vendor-advisory
- FEDORA-2020-8f7dcb7d00 vendor-advisory
- DSA-4818 vendor-advisory