CVE Vulnerabilities

CVE-2016-5823

Use After Free

Published: Jan 27, 2017 | Modified: Apr 20, 2025
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
4.3 LOW
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V3
5.5 LOW
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Ubuntu
LOW

The icalproperty_new_clone function in libical 0.47 and 1.0 allows remote attackers to cause a denial of service (use-after-free) via a crafted ics file.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Libical Libical_project 0.47 (including) 0.47 (including)
Libical Libical_project 1.0 (including) 1.0 (including)
Libical Ubuntu artful *
Libical Ubuntu bionic *
Libical Ubuntu cosmic *
Libical Ubuntu disco *
Libical Ubuntu esm-apps/bionic *
Libical Ubuntu esm-infra/xenial *
Libical Ubuntu precise *
Libical Ubuntu trusty *
Libical Ubuntu vivid/stable-phone-overlay *
Libical Ubuntu wily *
Libical Ubuntu xenial *
Libical Ubuntu yakkety *
Libical Ubuntu zesty *

Potential Mitigations

References