CVE-2020-12658
Vulnerability Scoring
Attack Complexity Details
- Attack Complexity: Low Impact
- Attack Vector: NETWORK
- Privileges Required: None
- Scope: UNCHANGED
- User Interaction: NONE
CIA Impact Definition
- Confidentiality: HIGH IMPACT
- Integrity: HIGH IMPACT
- Availability: HIGH IMPACT
CVE-2020-12658 Vulnerability Summary
gssproxy (aka gss-proxy) before 0.8.3 does not unlock cond_mutex before pthread exit in gp_worker_main() in gp_workers.c. NOTE: An upstream comment states "We are already on a shutdown path when running the code in question, so a DoS there doesn't make any sense, and there has been no additional information provided us (as upstream) to indicate why this would be a problem.
Access Complexity Graph for CVE-2020-12658
Impact Analysis for CVE-2020-12658
Exploit Prediction Scoring System (EPSS)
The EPSS score estimates the probability that this vulnerability will be exploited in the near future.
EPSS Score: 0.344% (probability of exploit)
EPSS Percentile: 71.68%
(lower percentile = lower relative risk)
This vulnerability is less risky than approximately 28.319999999999993% of others.
CVE-2020-12658 Detailed Information and External References
References
- https://github.com/gssapi/gssproxy/commit/cb761412e299ef907f22cd7c4146d50c8a792003
- https://github.com/gssapi/gssproxy/compare/v0.8.2...v0.8.3
- https://lists.debian.org/debian-lts-announce/2021/01/msg00004.html
- https://pagure.io/gssproxy/c/cb761412e299ef907f22cd7c4146d50c8a792003?branch=master
CWE
CWE-667CAPEC
- Forced Deadlock CAPEC-25 The adversary triggers and exploits a deadlock condition in the target software to cause a denial of service. A deadlock can occur when two or more competing actions are waiting for each other to finish, and thus neither ever does. Deadlock conditions can be difficult to detect.
- Leveraging Race Conditions CAPEC-26 The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with their version and cause the system to read the malicious file.
- Leveraging Race Conditions via Symbolic Links CAPEC-27 This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.
Vulnerable Configurations
-
cpe:2.3:a:gssproxy_project:gssproxy:0.0.2:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.0.2:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.0.3:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.0.3:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.1.0:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.1.0:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.1.1:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.2.0:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.2.0:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.2.1:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.2.2:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.2.2:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.2.3:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.2.3:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.3.0:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.3.1:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.3.1:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.4.0:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.4.0:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.4.1:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.5.0:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.5.1:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.6.0:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.6.0:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.6.1:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.6.1:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.6.2:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.6.2:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.7.0:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.8.0:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.8.1:*:*:*:*:*:*:*
-
cpe:2.3:a:gssproxy_project:gssproxy:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:gssproxy_project:gssproxy:0.8.2:*:*:*:*:*:*:*
-
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVSS3 Source
nvd@nist.gov
CVSS3 Type
Primary
CVSS3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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