Out-of-bounds read in chromium (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU25856

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-20503

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in sctp_load_addresses_from_init in usrsctp. A remote attacker can pass specially crafted data to the application, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

chromium (Alpine package): 79.0.3945.130-r0 - 80.0.3987.132-r2

CPE2.3

• cpe:2.3:a:alpine:chromium_alpine_package:79.0.3945.130-r0:*:*:*:*:alpine_linux:*:3.10
• cpe:2.3:a:alpine:chromium_alpine_package:80.0.3987.122-r0:*:*:*:*:alpine_linux:*:3.11
• cpe:2.3:a:alpine:chromium_alpine_package:80.0.3987.132-r0:*:*:*:*:alpine_linux:*:3.11

External links

https://git.alpinelinux.org/aports/commit/?id=739fadc78ad34b35354f0dc51861f882dd8c15e1
https://git.alpinelinux.org/aports/commit/?id=559ca01ce273111fa46352af60e88d74c657c7f5
https://git.alpinelinux.org/aports/commit/?id=1d258f723c31c630b8159e94a980ef430a9ea27b
https://git.alpinelinux.org/aports/commit/?id=82e6adffb8c262ce3e9453fbbe8e7fd2406bc48f
https://git.alpinelinux.org/aports/commit/?id=a16f83f7141a8f92c825dbe6822ff641ad8fa846
https://git.alpinelinux.org/aports/commit/?id=672f75ca5f5562f95ab35778287af25da1b99013

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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