| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200411-15"> |
| <title>OpenSSL, Groff: Insecure tempfile handling</title> |
| <synopsis> |
| groffer, included in the Groff package, and the der_chop script, included |
| in the OpenSSL package, are both vulnerable to symlink attacks, potentially |
| allowing a local user to overwrite arbitrary files with the rights of the |
| user running the utility. |
| </synopsis> |
| <product type="ebuild">OpenSSL</product> |
| <announced>November 08, 2004</announced> |
| <revised>August 23, 2006: 02</revised> |
| <bug>68404</bug> |
| <bug>68407</bug> |
| <access>local</access> |
| <affected> |
| <package name="dev-libs/openssl" auto="yes" arch="*"> |
| <unaffected range="ge">0.9.7d-r2</unaffected> |
| <vulnerable range="lt">0.9.7d-r2</vulnerable> |
| </package> |
| <package name="sys-apps/groff" auto="yes" arch="*"> |
| <unaffected range="ge">1.19.1-r2</unaffected> |
| <unaffected range="rge">1.18.1.1</unaffected> |
| <vulnerable range="lt">1.19.1-r2</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| OpenSSL is a toolkit implementing the Secure Sockets Layer and |
| Transport Layer Security protocols as well as a general-purpose |
| cryptography library. It includes the der_chop script, which is used to |
| convert DER-encoded certificates to PEM format. Groff (GNU Troff) is a |
| typesetting package which reads plain text mixed with formatting |
| commands and produces formatted output. It includes groffer, a command |
| used to display groff files and man pages on X and tty. |
| </p> |
| </background> |
| <description> |
| <p> |
| groffer and the der_chop script create temporary files in |
| world-writeable directories with predictable names. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p> |
| A local attacker could create symbolic links in the temporary files |
| directory, pointing to a valid file somewhere on the filesystem. When |
| groffer or der_chop is executed, this would result in the file being |
| overwritten with the rights of the user running the utility, which |
| could be the root user. |
| </p> |
| </impact> |
| <workaround> |
| <p> |
| There is no known workaround at this time. |
| </p> |
| </workaround> |
| <resolution> |
| <p> |
| All Groff users should upgrade to the latest version: |
| </p> |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose sys-apps/groff</code> |
| <p> |
| All OpenSSL users should upgrade to the latest version: |
| </p> |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.7d-r2"</code> |
| <p> |
| Note: /etc/ssl/misc/der_chop is protected by Portage as a configuration |
| file. Don't forget to use etc-update and overwrite the old version with |
| the new one. |
| </p> |
| </resolution> |
| <references> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0969">CAN-2004-0969</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0975">CAN-2004-0975</uri> |
| </references> |
| <metadata tag="submitter" timestamp="Sun, 7 Nov 2004 18:43:48 +0000"> |
| koon |
| </metadata> |
| <metadata tag="bugReady" timestamp="Sun, 7 Nov 2004 18:44:31 +0000"> |
| koon |
| </metadata> |
| </glsa> |