CVE-2008-6549 json
MoinMoin Denial of Service vulnerability via password_checker function
published 2009-03-30 17 y ago modified 2026-06-16 4 mo ago also GHSA-wjjc-m3fc-fcm8 , PYSEC-2009-12 , EUVD-2009-0008
- cvss
- 7.5
- version 3.1, GitHub
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
The password_checker function in config/multiconfig.py in MoinMoin 1.6.1 uses the cracklib and python-crack features even though they are not thread-safe, which allows remote attackers to cause a denial of service (segmentation fault and crash) via unknown vectors.
Patch / fix
- pypi moin 1.6.1
Exploit prediction
1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hg.moinmo.in http://hg.moinmo.in/moin/1.6/rev/35ff7a9b1546 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | moin | <1.6.1 |
1.6.1 |
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
hg.moinmo.in
/moin/1.6/rev/35ff7a9b1546
exploit, evidence
-
moinmo.in
/SecurityFixes
vendor-advisory, advisory
-
osvdb.org
/48876
vdb-entry, web
-
nvd.nist.gov
/vuln/detail/CVE-2008-6549
advisory
-
github.com
/moinwiki/moin
package
-
github.com
/pypa/advisory-database/tree/main/vulns/moin/PYSEC-2009-12.yaml
web
-
web.archive.org
/web/20080410051007/http://moinmo.in/SecurityFixes
web
-
web.archive.org
/web/20211206185024/http://hg.moinmo.in/moin/1.6/rev/35ff7a9b1546
web
Sources
- CVE List CVE-2008-6549
- GitHub Advisory GHSA-wjjc-m3fc-fcm8
- NVD CVE-2008-6549
- OSV PYSEC-2009-12
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.