MDKSA-2005:186
- Package name
- lynx
- Date
- 2005-10-17
- Advisory ID
- MDKSA-2005:186
- Affected versions
- MNF2.0 i586 , 2006.0 i586 , CS2.1 i586 , 10.2 i586 , 10.1 i586 , CS2.1 x86_64 , CS3.0 x86_64 , CS3.0 i586 , 10.2 x86_64 , 2006.0 x86_64 , 10.1 x86_64
Problem description
Ulf Harnhammar discovered a remote buffer overflow in lynx versions 2.8.2 through 2.8.5. When Lynx connects to an NNTP server to fetch information about the available articles in a newsgroup, it will call a function called HTrjis() with the information from certain article headers. The function adds missing ESC characters to certain data, to support Asian character sets. However, it does not check if it writes outside of the char array buf, and that causes a remote stack-based buffer overflow, with full control over EIP, EBX, EBP, ESI and EDI. Two attack vectors to make a victim visit a URL to a dangerous news server are: (a) *redirecting scripts*, where the victim visits some web page and it redirects automatically to a malicious URL, and (b) *links in web pages*, where the victim visits some web page and selects a link on the page to a malicious URL. Attack vector (b) is helped by the fact that Lynx does not automatically display where links lead to, unlike many graphical web browsers. The updated packages have been patched to address this issue.
Updated packages
MNF2.0 i586
f43a161be8fb6049d3f2361b5ead799a mnf/2.0/RPMS/lynx-2.8.5-1.1.M20mdk.i586.rpm 570c3679d4d38e62c21e570ab37f5bfe mnf/2.0/SRPMS/lynx-2.8.5-1.1.M20mdk.src.rpm
2006.0 i586
ee92cfae1cce73b8084cf6ad2c6d1381 2006.0/RPMS/lynx-2.8.5-4.1.20060mdk.i586.rpm a022a76a884e198cf4f331a4d71c7d20 2006.0/SRPMS/lynx-2.8.5-4.1.20060mdk.src.rpm
CS2.1 i586
b18b5f89f3a8389362a9f67acfb87a2c corporate/2.1/RPMS/lynx-2.8.5-0.10.2.C21mdk.dev.8.i586.rpm 3d6af86d010f884152fd30f7fdd0bcb9 corporate/2.1/SRPMS/lynx-2.8.5-0.10.2.C21mdk.dev.8.src.rpm
10.2 i586
e81251fccbdd21bdaebd963e6e2ed1d2 10.2/RPMS/lynx-2.8.5-1.1.102mdk.i586.rpm 6e5cceb1a9bdf36e7f8eab2ecc08799f 10.2/SRPMS/lynx-2.8.5-1.1.102mdk.src.rpm
10.1 i586
03a47f29118c2291a3bf9a355273560c 10.1/RPMS/lynx-2.8.5-1.1.101mdk.i586.rpm 0e7e4cd9c64861a7d0a284fb6b9be9e3 10.1/SRPMS/lynx-2.8.5-1.1.101mdk.src.rpm
CS2.1 x86_64
d4e5c0107a09cef8d142ca666d049303 x86_64/corporate/2.1/RPMS/lynx-2.8.5-0.10.2.C21mdk.dev.8.x86_64.rpm 3d6af86d010f884152fd30f7fdd0bcb9 x86_64/corporate/2.1/SRPMS/lynx-2.8.5-0.10.2.C21mdk.dev.8.src.rpm
CS3.0 x86_64
5df091387574a783a1a9cae4008f7dcb x86_64/corporate/3.0/RPMS/lynx-2.8.5-1.1.C30mdk.x86_64.rpm c456757c4be351906911fc7827ffb348 x86_64/corporate/3.0/SRPMS/lynx-2.8.5-1.1.C30mdk.src.rpm
CS3.0 i586
970bef84ca43e8855569efad58455c47 corporate/3.0/RPMS/lynx-2.8.5-1.1.C30mdk.i586.rpm c456757c4be351906911fc7827ffb348 corporate/3.0/SRPMS/lynx-2.8.5-1.1.C30mdk.src.rpm
10.2 x86_64
411f4dc65bf8c58a55a92cdb3be9ef53 x86_64/10.2/RPMS/lynx-2.8.5-1.1.102mdk.x86_64.rpm 6e5cceb1a9bdf36e7f8eab2ecc08799f x86_64/10.2/SRPMS/lynx-2.8.5-1.1.102mdk.src.rpm
2006.0 x86_64
46833e32f2c958d8fb544654efd4ab83 x86_64/2006.0/RPMS/lynx-2.8.5-4.1.20060mdk.x86_64.rpm a022a76a884e198cf4f331a4d71c7d20 x86_64/2006.0/SRPMS/lynx-2.8.5-4.1.20060mdk.src.rpm
10.1 x86_64
657c0cd7d9226c5b1f8b57c19e72f657 x86_64/10.1/RPMS/lynx-2.8.5-1.1.101mdk.x86_64.rpm 0e7e4cd9c64861a7d0a284fb6b9be9e3 x86_64/10.1/SRPMS/lynx-2.8.5-1.1.101mdk.src.rpm