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Family: Debian Local Security Checks --> Category: infos

[DSA454] DSA-454-1 linux-kernel-2.2.22-alpha Vulnerability Scan

Vulnerability Scan Summary
DSA-454-1 linux-kernel-2.2.22-alpha

Detailed Explanation for this Vulnerability Test

Paul Starzetz and Wojciech Purczynski of href="">discovered a critical
security vulnerability in the memory management code of Linux inside
the mremap(2) system call. Due to flushing the TLB (Translation
Lookaside Buffer, an address cache) too early it is possible for an
attacker to trigger a local root exploit.
The attack vectors for 2.4.x and 2.2.x kernels are exclusive for the
respective kernel series, though. We formerly believed that the
exploitable vulnerability in 2.4.x does not exist in 2.2.x which is
still true. However, it turned out that a second (sort of)
vulnerability is indeed exploitable in 2.2.x, but not in 2.4.x, with a
different exploit, of course.
For the stable distribution (woody) this problem has been fixed in
the following versions and architectures:
For the unstable distribution (sid) this problem will be fixed soon
for the architectures that still ship a 2.2.x kernel package.
We recommend that you upgrade your Linux kernel package.
Vulnerability matrix for CVE-2004-0077

Solution :
Threat Level: High

Click HERE for more information and discussions on this network vulnerability scan.


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