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Insecure Library Loading
Moderately critical

ekg Contributed Scripts / libgadu Multiple Vulnerabilities

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Release Date:  2005-07-19    Last Update:  2005-08-09    Views:  9,001

Secunia Advisory SA16102

Where:

From remote

Impact:

Unknown, Privilege escalation, DoS

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Some vulnerabilities have been reported in ekg contributed scripts and libgadu, which can be exploited by malicious, local users to perform certain actions with escalated privileges, or by malicious people to cause a DoS (Denial of Service).

1) Temporary files are created insecurely in "/tmp" by contrib/ekgnv.sh and contrib/getekg.sh, and in "/usr/tmp" by contrib/ekgh. This can be exploited via symlink attacks to create or overwrite arbitrary files with the privileges of the user executing a vulnerable script.

2) An error in contrib/scripts/ekgbot-pre1.py can potentially be exploited to inject shell commands.

3) Several signedness errors in libgadu can be exploited via specially crafted packets or by an application passing invalid input to the library.

4) Several memory alignment errors in libgadu when handling certain incoming messages can cause bus errors on architectures like SPARC. This can potentially be exploited to cause a DoS.

5) Various endianness errors in libgadu can be exploited to cause invalid behaviour of applications on big-endian architectures.

The vulnerabilities have been reported in version 1.6rc1. Other versions may also be affected.


Solution:
The vulnerabilities have been fixed in version 1.6rc2.

Provided and/or discovered by:
1-2) Marcin Owsiany and Wojtek Kaniewski
3) Grzegorz JaAkiewicz
4) Szymon Zygmunt and Michal Bartoszkiewicz
5) Marcin Slusarz

Original Advisory:
Debian:
http://www.debian.org/security/2005/dsa-760

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: ekg Contributed Scripts / libgadu Multiple Vulnerabilities

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