Segmentation fault in elfutils (Alpine package)

1) Segmentation fault

EUVDB-ID: #VU15371

Risk: Low

CVSSv4.0: 5.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-18310

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition on the target system.

The vulnerability exists in the dwfl_segment_report_module.c source code file in the libdwfl library due to improper handling of Executable and Linkable Format (ELF) files. A local attacker can send an ELF file that submits malicious input, execute the eu-stack command, trigger a segmentation fault and cause the affected application to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

elfutils (Alpine package): 0.168-r0 - 0.168-r2

CPE2.3

• cpe:2.3:o:alpine:elfutils_alpine_package:0.168-r0:*:*:*:*:alpine_linux:*:3.5
• cpe:2.3:o:alpine:elfutils_alpine_package:0.168-r1:*:*:*:*:alpine_linux:*:3.8
• cpe:2.3:o:alpine:elfutils_alpine_package:0.168-r2:*:*:*:*:alpine_linux:*:3.8

External links

https://git.alpinelinux.org/aports/commit/?id=2e3d4976eeffb4704cf83e2cc3306293b7c7b2e9
https://git.alpinelinux.org/aports/commit/?id=e6866032366ba749f1255724e6ef1114058e9390

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