Resource exhaustion in tiff (Alpine package)

1) Resource exhaustion

EUVDB-ID: #VU11500

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5784

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The weakness exists in the TIFFSetDirectory function of tif_dir.c due to the declared number of directory entries is not validated against the actual number of directory entries. A remote attacker can submit a specially crafted tif file, trigger resource exhaustion and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

tiff (Alpine package): 4.0.9-r0 - 4.0.9-r1

CPE2.3

• cpe:2.3:a:alpine:tiff_alpine_package:4.0.9-r0:*:*:*:*:alpine_linux:*:3.3
• cpe:2.3:a:alpine:tiff_alpine_package:4.0.9-r1:*:*:*:*:alpine_linux:*:3.3

External links

https://git.alpinelinux.org/aports/commit/?id=c1c8c5a78a149b9954517df485d61e66a73a93a4
https://git.alpinelinux.org/aports/commit/?id=332be619a78433b9c764c24921ce1c65be925706
https://git.alpinelinux.org/aports/commit/?id=39e7a41708bf7726f95f47c383c9af376504e3f7
https://git.alpinelinux.org/aports/commit/?id=d44bbad626a89045134ceddb388802b67aeb6cc3
https://git.alpinelinux.org/aports/commit/?id=e132e3f9bf008c2ec054305050040eb7d6958633
https://git.alpinelinux.org/aports/commit/?id=f8701de7f90a2ca4b4457a9607333faf24854030

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.