#VU21749 NULL pointer dereference in libvips - CVE-2018-7998

Vulnerability identifier: #VU21749

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-7998

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libvips
Universal components / Libraries / Libraries used by multiple products

Vendor: libvips

Description

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

The vulnerability exists due to a NULL pointer dereference error within the vips_region_generate() function in region.c in the libvips library.  A remote attacker can pass specially crafted input to the library and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libvips: 8.6.0 - 8.6.2

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External links
https://github.com/jcupitt/libvips/commit/20d840e6da15c1574b3ed998bc92f91d1e36c2a5
https://github.com/jcupitt/libvips/issues/893
https://lists.debian.org/debian-lts-announce/2018/03/msg00009.html

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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.