Out-of-bounds read in libjpeg-turbo (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU24203

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14498

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition when processing a crafted 8-bit BMP in which one or more of the color indices is out of range for the number of palette entries within the get_8bit_row in rdbmp.c. A remote attacker can create a specially crafted file, pass it to the application, trigger out-of-bounds read error and crash the affected application.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libjpeg-turbo (Alpine package): 1.5.3-r2 - 1.5.3-r4

External links

http://git.alpinelinux.org/aports/commit/?id=39308e8b51397113cb0b9426f3bce50e289e896e
http://git.alpinelinux.org/aports/commit/?id=86c6e6392e0093f4d407ed457eafe9237c22bc0e
http://git.alpinelinux.org/aports/commit/?id=a56d6481f2d8ef9c343fad36b6e5c3b5ec562003

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.