Buffer overflow in blktrace

1) Buffer overflow

EUVDB-ID: #VU22938

Risk: Low

CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2018-10689

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the dev_map_read() function in btt/devmap.c in blktrace. A local user can create a specially crafted file, pass it to he application that is using the vulnerable component (e.g. btt program), trigger memory corruption and execute arbitrary code with elevated privileges.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Block IO Tracing: 0.99 - 1.2.0

External links

http://git.kernel.dk/?p=blktrace.git;a=log;h=d61ff409cb4dda31386373d706ea0cfb1aaac5b7
http://access.redhat.com/errata/RHSA-2019:2162
http://git.kernel.org/pub/scm/linux/kernel/git/axboe/blktrace.git/commit/?id=d61ff409cb4dda31386373d706ea0cfb1aaac5b7
http://www.spinics.net/lists/linux-btrace/msg00847.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.