CVE-2024-6563

Name	CVE-2024-6563
Description	Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Renesas arm-trusted-firmware allows Local Execution of Code. This vulnerability is associated with program files https://github.Com/renesas-rcar/arm-trusted-firmware/blob/rcar_gen3_v2.5/drivers/renesas/common/io/i... https://github.Com/renesas-rcar/arm-trusted-firmware/blob/rcar_gen3_v2.5/drivers/renesas/common/io/io_rcar.C . In line 313 "addr_loaded_cnt" is checked not to be "CHECK_IMAGE_AREA_CNT" (5) or larger, this check does not halt the function. Immediately after (line 317) there will be an overflow in the buffer and the value of "dst" will be written to the area immediately after the buffer, which is "addr_loaded_cnt". This will allow an attacker to freely control the value of "addr_loaded_cnt" and thus control the destination of the write immediately after (line 318). The write in line 318 will then be fully controlled by said attacker, with whichever address and whichever value ("len") they desire.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1076042

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
arm-trusted-firmware (PTS)	bullseye	2.4+dfsg-2	vulnerable
	bookworm	2.8.0+dfsg-1	vulnerable
	sid, trixie	2.10.0+dfsg-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
arm-trusted-firmware	source	(unstable)	(unfixed)			1076042

Notes

[bookworm] - arm-trusted-firmware <no-dsa> (Minor issue)
[bullseye] - arm-trusted-firmware <no-dsa> (Minor issue)
https://github.com/renesas-rcar/arm-trusted-firmware/commit/235f85b654a031f7647e81b86fc8e4ffeb430164
https://asrg.io/security-advisories/cve-2024-6563/