CVE-2011-2900 EXPLOIT
7.5
HIGH · CVSS 2.0 · EPSS 13.3% (pctl 96)
Patch early
A public exploit exists.
Description
Stack-based buffer overflow in the (1) put_dir function in mongoose.c in Mongoose 3.0, (2) put_dir function in yasslEWS.c in yaSSL Embedded Web Server (yasslEWS) 0.2, and (3) _shttpd_put_dir function in io_dir.c in Simple HTTPD (shttpd) 1.42 allows remote attackers to execute arbitrary code via an HTTP PUT request, as exploited in the wild in 2011.
Scoring
| CVSS | 7.5 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| EPSS | 13.26% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-119 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2011-08-05 |
| Last modified | 2026-06-16 |
Affected (3)
| Vendor | Product |
|---|---|
| shttpd | shttpd |
| valenok | mongoose |
| yassl | yasslews |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Simple HTTPd 1.42 - 'PUT' Remote Buffer Overflow | 2011-08-15 |
| exploit-db | Simple HTTPd 1.42 - Denial of Servive | 2011-08-12 |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065273.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065505.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065537.html
- http://secunia.com/advisories/45464
- http://secunia.com/advisories/45902
- http://securityreason.com/securityalert/8337
- http://www.openwall.com/lists/oss-security/2011/08/03/5
- http://www.openwall.com/lists/oss-security/2011/08/03/9
- http://www.securityfocus.com/bid/48980
- https://code.google.com/p/mongoose/source/detail?r=556f4de91eae4bac40dc5d4ddbd9ec7c424711d0
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68991
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065273.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065505.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065537.html
- http://secunia.com/advisories/45464
- http://secunia.com/advisories/45902
- http://securityreason.com/securityalert/8337
- http://www.openwall.com/lists/oss-security/2011/08/03/5
- http://www.openwall.com/lists/oss-security/2011/08/03/9
- http://www.securityfocus.com/bid/48980
→ the Explorer · watch your stack · NVD