Mandriva Linux Security Advisory 2009-322 - IOActive Inc. found a buffer overflow in Mono.Math.BigInteger class in Mono 1.2.5.1 and previous versions, which allows arbitrary code execution by context-dependent attackers. Multiple cross-site scripting (XSS) vulnerabilities were discovered in the ASP.net class libraries in Mono 2.0 and earlier. CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string. The XML HMAC signature system did not correctly check certain lengths. If an attacker sent a truncated HMAC, it could bypass authentication, leading to potential privilege escalation. Packages for 2008.0 are being provided due to extended support for Corporate products. The updated packages have been patched to fix these issues.
ac595de6900cd8c12028c1914747f7f1fc67ec1d0d49ad77f576b6b17b0f2203Ubuntu Security Notice USN-826-1 - It was discovered that the XML HMAC signature system did not correctly check certain lengths. If an attacker sent a truncated HMAC, it could bypass authentication, leading to potential privilege escalation. It was discovered that Mono did not properly escape certain attributes in the ASP.net class libraries which could result in browsers becoming vulnerable to cross-site scripting attacks when processing the output. With cross-site scripting vulnerabilities, if a user were tricked into viewing server output during a crafted server request, a remote attacker could exploit this to modify the contents, or steal confidential data (such as passwords), within the same domain. This issue only affected Ubuntu 8.04 LTS. It was discovered that Mono did not properly filter CRLF injections in the query string. If a user were tricked into viewing server output during a crafted server request, a remote attacker could exploit this to modify the contents, steal confidential data (such as passwords), or perform cross-site request forgeries. This issue only affected Ubuntu 8.04 LTS.
2ad29fa1156368f088ec7fd61ddf354bd88a9b875c072b5a2b54cec8ad4511a1Mandriva Linux Security Advisory - CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string. The updated packages have been patched to fix the issue. This update was too late for inclusion in Mandriva Linux 2009, so it is being released now for that version.
057cc00fb8f186be7032374de00c42bdc803457f6c45ccb348535206b9dac36bMandriva Linux Security Advisory - CRLF injection vulnerability in Sys.Web in Mono 2.0 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the query string. The updated packages have been patched to fix the issue.
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