Denial of service in OpenEXR

1) NULL pointer dereference

EUVDB-ID: #VU87181

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 Imf_3_3::realloc_deepdata() function. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OpenEXR: 3.0.0 beta - 3.2.126

External links

http://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.3
http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=66676
http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=66612

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.