CVE-2011-2900

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-08-05 · updated 2026-06-16
Weakness: CWE-119

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.

Affected products

Shttpd: 1.42
Valenok Mongoose: 3.0
Yasslews: 0.2

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

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