CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.6 | $0-$5k | 0.00 |
A vulnerability was found in fontconfig up to 2.12.0 and classified as critical. This issue affects an unknown code block of the component Cache File Handler. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. The summary by CVE is:
fontconfig before 2.12.1 does not validate offsets, which allows local users to trigger arbitrary free calls and consequently conduct double free attacks and execute arbitrary code via a crafted cache file.
The weakness was published 08/13/2016 by Tobias Stoeckmann (Website). The advisory is shared at debian.org. The identification of this vulnerability is CVE-2016-5384 since 06/10/2016. The exploitation is known to be easy. An attack has to be approached locally. The requirement for exploitation is a simple authentication. Neither technical details nor an exploit are publicly available.
The vulnerability scanner Nessus provides a plugin with the ID 92827 (Debian DLA-587-1 : fontconfig security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.
Upgrading to version 2.12.1 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (92827).
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.8VulDB Meta Temp Score: 7.6
VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Double freeCWE: CWE-415 / CWE-119
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 92827
Nessus Name: Debian DLA-587-1 : fontconfig security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 870549
OpenVAS Name: Fedora Update for fontconfig FEDORA-2016-e23ab56ce3
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: fontconfig 2.12.1
Patch: cgit.freedesktop.org
Timeline
06/10/2016 🔍06/28/2016 🔍
08/09/2016 🔍
08/10/2016 🔍
08/12/2016 🔍
08/13/2016 🔍
08/13/2016 🔍
09/13/2022 🔍
Sources
Advisory: USN-3063-1Researcher: Tobias Stoeckmann
Status: Not defined
Confirmation: 🔍
CVE: CVE-2016-5384 (🔍)
OVAL: 🔍
SecurityFocus: 92339 - Fontconfig CVE-2016-5384 Local Privilege Escalation Vulnerability
Entry
Created: 08/13/2016 20:58Updated: 09/13/2022 17:58
Changes: 08/13/2016 20:58 (61), 03/26/2019 08:25 (14), 09/13/2022 17:50 (4), 09/13/2022 17:58 (1)
Complete: 🔍
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