Vulnerability identifier: #VU13238

Vulnerability risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-7609

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
elfutils
Server applications / File servers (FTP/HTTP)

Vendor: Sourceware

Description

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

The vulnerability exists in the elf_compress.c source code of elfutils due to improper validation of the zlib compression factor before the affected software allocates the output buffer. A remote attacker can trick the victim into opening an Executable and Linkable Format (ELF) file that submits malicious input, trigger memory corruption and cause the application to crash.

Mitigation
Update to version 0.169.

Vulnerable software versions

elfutils: 0.133 - 0.168

---

External links
http://sourceware.org/bugzilla/show_bug.cgi?id=21301

---

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.