Memory corruption in tiff (Alpine package)

1) Memory corruption

EUVDB-ID: #VU11499

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-9935

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists in the t2p_write_pdf function in tools/tiff2pdf.c due to heap-based buffer overflow. A remote attacker can submit a specially crafted TIFF document, trigger out-of-bounds read in TIFFCleanup, an invalid free in TIFFClose or t2p_free, memory corruption in t2p_readwrite_pdf_image, or a double free in t2p_free and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

tiff (Alpine package): 4.0.8-r0 - 4.0.9-r5

External links

http://git.alpinelinux.org/aports/commit/?id=f09fba4d42bac44edc96e82032d6b798b1c74fe4
http://git.alpinelinux.org/aports/commit/?id=6659caf6913d6dd6651a2f723184dbca1d72f499
http://git.alpinelinux.org/aports/commit/?id=a384f1f9b968fcff0bbab9758dec1ae69e738b29
http://git.alpinelinux.org/aports/commit/?id=a7f6a9958c48146e719ecc1f6e2c38812af75c4b
http://git.alpinelinux.org/aports/commit/?id=c1c8c5a78a149b9954517df485d61e66a73a93a4
http://git.alpinelinux.org/aports/commit/?id=dc9b38d5feecbb2fcf0dd40261d5a5e958792b2b

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.