CVE-2011-2174 Use after free in n/a
Remote attackers can crash Wireshark via malformed zlib-compressed packets due to a double free vulnerability in the tvb_uncompress function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-2174?
CVE-2011-2174 is a medium-severity use after free vulnerability in Wireshark Wireshark, published on 6 Jun 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Double free vulnerability in the tvb_uncompress function in epan/tvbuff.c in Wireshark 1.2.x before 1.2.17 and 1.4.x before 1.4.7 allows remote attackers to cause a denial of service (application crash) via a packet with malformed data that uses zlib compression.
Weakness: CWE-399
Which versions are affected by CVE-2011-2174?
It affects 1 product.
Products include Wireshark Wireshark.
How do I fix CVE-2011-2174?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2011-2174 being exploited?
There is no known exploitation of CVE-2011-2174 in the wild and no public exploit code.
Other vulnerabilities in Wireshark Wireshark
Sources
Also known as DEBIAN-CVE-2011-2174, GHSA-3648-p859-9652.