#VU22938 Buffer overflow in Block IO Tracing - CVE-2018-10689

Vulnerability identifier: #VU22938

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-10689

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Block IO Tracing
Universal components / Libraries / Libraries used by multiple products

Vendor: Jens Axboe

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

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

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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.