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Debian alert DSA-2843-1 (graphviz)

From:  Salvatore Bonaccorso <>
Subject:  [SECURITY] [DSA 2843-1] graphviz security update
Date:  Mon, 13 Jan 2014 21:49:14 +0000
Message-ID:  <>

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-2843-1 Salvatore Bonaccorso January 13, 2014 - ------------------------------------------------------------------------- Package : graphviz Vulnerability : buffer overflow Problem type : local (remote) Debian-specific: no CVE ID : CVE-2014-0978 CVE-2014-1236 Debian Bug : 734745 Two buffer overflow vulnerabilities were reported in Graphviz, a rich collection of graph drawing tools. The Common Vulnerabilities and Exposures project identifies the following issues: CVE-2014-0978 It was discovered that user-supplied input used in the yyerror() function in lib/cgraph/scan.l is not bound-checked before beeing copied into an insufficiently sized memory buffer. A context-dependent attacker could supply a specially crafted input file containing a long line to cause a stack-based buffer overlow, resulting in a denial of service (application crash) or potentially allowing the execution of arbitrary code. CVE-2014-1236 Sebastian Krahmer reported an overflow condition in the chkNum() function in lib/cgraph/scan.l that is triggered as the used regular expression accepts an arbitrary long digit list. With a specially crafted input file, a context-dependent attacker can cause a stack-based buffer overflow, resulting in a denial of service (application crash) or potentially allowing the execution of arbitrary code. For the oldstable distribution (squeeze), these problems have been fixed in version 2.26.3-5+squeeze2. For the stable distribution (wheezy), these problems have been fixed in version 2.26.3-14+deb7u1. For the unstable distribution (sid), these problems will be fixed soon. We recommend that you upgrade your graphviz packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: Mailing list: -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJS1F2EAAoJEAVMuPMTQ89EWBwQAISt7imnmeVUWImsvIT7r/pa WWoN0n8/MWvkyjEmBKHDETbh4sN+7J6Ri7U03m/aK6jJ//Z+uAbYi7GRAOwf2xV0 qyw0xcHlu4G0Z+ECZyXZ+2+vXFV/1D5+5nZpc47xqGhudd0IQQ2JstWwOAHmJmyi gYN3qsfXW0i3uhBAaZjnfhxfymoq6y9OMRUM7KCNABB+/uBJ1VbZfvnGsTUDas0x lvK1RyPnm3qHfEP9M8OS1DZWo3CJDuNS1CxJAaPvoGZwSzTCJ0UxuOEp6dTDWfO6 nCE4jfKtoJvzAHZqJNVuY0uEYUB++1AEyu9g9uFxvMaDMS3GxMh9kaihKl7SspR9 YXjtnzburBcBdDsbrCkXsyC+yxtW+h1GqI7F6lh9oT32ap3FZsP9zukUP9z/JL8z rY8T9xKiotBUw6nlL8aaPBBEXPEDNGGbAiPDriyiAhPPYxoZI24IjYlfcjS3ucip LqgTGttnboymyYhyVIQNkNxhB1Nu+OasYN9zwmiBvmncjSB5lAIQ6B7EOWMMqV2m z/ifZHMbt4E1BIvCTG6mnK7BmAxFHKIkQdEPqxQ59x+uzJbtaiIsi/fS5v2GXJhr Pk69Jjskt1t84pLqujbPqtvS6P5fatfQLILWFTTa+PSTNJ3TzlhRtwbMXwRgcbvi +6lL8C17nOZb5lIyB8BP =9P+C -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to with a subject of "unsubscribe". Trouble? Contact Archive:

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