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CVE-2010-2810

Status Candidate

Overview

Heap-based buffer overflow in the convert_to_idna function in WWW/Library/Implementation/HTParse.c in Lynx 2.8.8dev.1 through 2.8.8dev.4 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a malformed URL containing a % (percent) character in the domain name.

Related Files

Ubuntu Security Notice USN-1642-1
Posted Nov 30, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1642-1 - Dan Rosenberg discovered a heap-based buffer overflow in Lynx. If a user were tricked into opening a specially crafted page, a remote attacker could cause a denial of service via application crash, or possibly execute arbitrary code as the user invoking the program. This issue only affected Ubuntu 10.04 LTS. It was discovered that Lynx did not properly verify that an HTTPS certificate was signed by a trusted certificate authority. This could allow an attacker to perform a "man in the middle" (MITM) attack which would make the user believe their connection is secure, but is actually being monitored. This update changes the behavior of Lynx such that self-signed certificates no longer validate. Users requiring the previous behavior can use the 'FORCE_SSL_PROMPT' option in lynx.cfg. Various other issues were also addressed.

tags | advisory, remote, web, denial of service, overflow, arbitrary
systems | linux, ubuntu
advisories | CVE-2010-2810, CVE-2012-5821, CVE-2010-2810, CVE-2012-5821
SHA-256 | b98e04aa75eae4a1918f485d23f130b118754361f7105d77894ebac142879154
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