Heap-based out-of-bounds read in elfutils (Alpine package)

1) Heap-based out-of-bounds read

EUVDB-ID: #VU17326

Risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-7149

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of Executable and Linkable Format (ELF) files by the read_srclines function, as defined in the dwarf_getsrclines.c source code file. A remote attacker can trick the victim into opening a specially crafted an ELF file that submits malicious input, trigger a heap-based buffer over-read condition and cause the affected application to crash, resulting in a DoS condition.

Mitigation

Install update from vendor's website.

Vulnerable software versions

elfutils (Alpine package): 0.168-r2

CPE2.3

• cpe:2.3:o:alpine:elfutils_alpine_package:0.168-r2:*:*:*:*:alpine_linux:*:3.11

External links

https://git.alpinelinux.org/aports/commit/?id=2e3d4976eeffb4704cf83e2cc3306293b7c7b2e9

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. However, proof of concept for this vulnerability is available.