-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Package : bash Version : 4.2+dfsg-0.1+deb7u3 CVE ID : CVE-2016-7543
An old attack vector has been corrected in bash, a sh-compatible command language interpreter. CVE-2016-7543 Specially crafted SHELLOPTS+PS4 environment variables in combination with insecure setuid binaries can result in root privilege escalation. The setuid binary had to both use setuid() function call in combination with a system() or popen() function call. With this combination it is possible to gain root access. I addition bash have to be the default shell (/bin/sh have to point to bash) for the system to be vulnerable. The default shell in Debian is dash and there are no known setuid binaries in Debian with the, above described, insecure combination. There could however be local software with the, above described, insecure combination that could benefit from this correction. For Debian 7 "Wheezy", this problem have been fixed in version 4.2+dfsg-0.1+deb7u3. We recommend that you upgrade your bash packages. If there are local software that have the insecure combination and do a setuid() to some other user than root, then the update will not correct that problem. That problem have to be addressed in the insecure setuid binary. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - -- -------------- Ola Lundqvist -------------------- / [email protected] GPG fingerprint \ | [email protected] 22F2 32C6 B1E0 F4BF 2B26 | | http://inguza.com/ 0A6A 5E90 DCFA 9426 876F / ------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBCAAGBQJYEQO5AAoJEF6Q3PqUJodvVusP/Amzbzyj2IBaK+aI4oUCiyQW lbaWxmJh4aaEMUUdCr/qxK5H4jJTaklPmyrjVRqSYF0L8LsTI2/oCJXXEmjc7RQD Lxs1BCJLBJqLr/Az2Wdt7rFlrJ5qB9wQ+6E16+pHBUsBt/+lhUkTVjfKOpt7QdGA O2gQPAlsLoIloJxNLVQLEbVQKmQ+mX5Ds19XTkl4XAuYujP2m5/KM0Wav/Rfu/u9 WkHbSJi0eWOeeTHDQqSrRd89t5BfoAZt9TSHgxRlkHI/MXed7315YAeTszCsfZ4c hBXSJBlMVY/W8TMTPYAnlLKK1BmDzsfqyWfQI7/urMJKFVcTZvhFNiKQHDS7l27x QrxRwa76VSkVZ14NEsFIhN7y3a7Pv6L0G8Fq3Ppc30DA40Nzbr5SjE8OZnCxNyoN 8upYTvekJUYWhTdjL0risw2YNby4XDK70EE/cst+uM0i0L/sgJHQ6gCBo02MWh+Q mcRqsmhhFjIjr86Xut3xSc5x8ss6c+Zdt/Q5aQkoyF1STbpbeeHmj0OaMheU9E7O qt6oEIcDv6tA6faF8Wgb7S+NR/Z/Zw1wp2M0/zhIUkp6MAodbU+JoLxlF8z+lbHU /PnLKP/+Pa6nmbImzxV42rUl7wrViRMBEkgw3T0A3p5Cz9XInuJBnwcY4q/wzTBd Mh45aT8YvPvHnEyKffya =/vRu -----END PGP SIGNATURE-----
