CVE-2011-2940: Buffer Overflow
stunnel 4.40 and 4.41 might allow remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.
Other sources
Stunnel 4.42 fixes a heap corruption vulnerability that may be exploited to possibly perform a remote DoS or remote code execution [1]. The upstream changelog indicates that only 4.40 and 4.41 are affected.
Fedora 16 has a candidate build of 4.41, which would introduce this flaw; it should be updated to 4.42 immediately.
[1] http://stunnel.org/?page=sdfChangeLog
— Red Hat
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2011-2940?
CVE-2011-2940 is considered a high severity vulnerability due to the potential for remote code execution and denial of service through heap memory corruption.
How do I fix CVE-2011-2940?
To address CVE-2011-2940, upgrade to Stunnel version 4.42 or later as it resolves the heap corruption issues.
Which versions of Stunnel are affected by CVE-2011-2940?
CVE-2011-2940 affects Stunnel versions 4.40 and 4.41.
Can CVE-2011-2940 lead to data breaches?
Yes, CVE-2011-2940 can potentially allow remote attackers to exploit the vulnerability and lead to data breaches.
What type of vulnerability is CVE-2011-2940?
CVE-2011-2940 is categorized as a heap memory corruption vulnerability.