Description
A flaw was found in dmg2img through 20170502. fill_mishblk() does not check the length of the read buffer, and copy 0xCC bytes from it. The length of the buffer is controlled by an attacker. By providing a length smaller than 0xCC, memcpy reaches out of the malloc'ed bound. This possibly leads to memory layout information leaking in the data. This might be used in a chain of vulnerability in order to reach code execution.
References (1)
Core 1
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1959911
Scores
CVSS v3
7.1
EPSS
0.0029
EPSS Percentile
52.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Details
CWE
CWE-125
Status
published
Products (1)
dmg2img_project/dmg2img
< 20170502
Published
May 26, 2021
Tracked Since
Feb 18, 2026