CVE-2009-4124
Heap-based buffer overflow in the rb_str_justify function in string.c in Ruby 1.9.1 before 1.9.1-p376 allows context-dependent attackers…
- 10.0HighCVSS base score
- 3.9%Exploitation in 30 daysEPSS · top 9.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Heap-based buffer overflow in the rb_str_justify function in string.c in Ruby 1.9.1 before 1.9.1-p376 allows context-dependent attackers to execute arbitrary code via unspecified vectors involving (1) String#ljust, (2) String#center, or (3) String#rjust. NOTE: some of these details are obtained from third party information.
Timeline
ID reserved
By mitre
- 11 days later
· 11 days later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 3.9% · top 9.7% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.
Affected products
n/a
- affected n/a
References
6
- 60880 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- ruby-rbstrjustify-bo(54674) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://www.ruby-lang.org/en/news/2009/12/07/heap-overflow-in-string/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-3471 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 37278 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 37660 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-4094 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-4124)Record last updated .