CVE-2011-2882 Memory corruption in n/a

Critical 9.3 Published 21 Jul 2011 Updated 6 Aug 2024

Remote attackers can execute arbitrary code via crafted HTTP headers in the Citrix Access Gateway ActiveX control, requiring user interaction.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2011-2882?

CVE-2011-2882 is a critical memory corruption vulnerability in n/a, published on 21 Jul 2011. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Stack-based buffer overflow in the NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise Edition 8.1 before 8.1-67.7, 9.0 before 9.0-70.5, and 9.1 before 9.1-96.4 allows remote attackers to execute arbitrary code via crafted HTTP header data.

Weakness: CWE-119

Which versions are affected by CVE-2011-2882?

It affects 1 product.

Products include Citrix Access Gateway.

How do I fix CVE-2011-2882?

No fix has been published for CVE-2011-2882 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2011-2882 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-2882 exists.

Public exploit code: 1 Metasploit module and 1 Exploit-DB entry.

Sources

Also known as GHSA-cwj2-353m-w5fv.