CVE-2019-11922 : A race condition in the one-pass compression functions of Zstandard prior to ver

A race condition in the one-pass compression functions of Zstandard prior to version 1.3.8 could allow an attacker to write bytes out of bounds if an output buffer smaller than the recommended size was used.

Published 2019-07-25 21:15:12

Updated 2020-10-20 22:15:30

Source Facebook, Inc.

View at NVD, CVE.org

Products affected by CVE-2019-11922

Facebook » Zstandard
Versions before (<) 1.3.8
cpe:2.3:a:facebook:zstandard:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2019-11922

EPSS FAQ

1.85%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 88 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-11922

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
8.1	HIGH	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	2.2	5.9	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2019-11922

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-11922

https://www.oracle.com/security-alerts/cpuoct2020.html

Oracle Critical Patch Update Advisory - October 2020

CVEs referencing this url
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00008.html

[security-announce] openSUSE-SU-2019:1845-1: moderate: Security update f
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00062.html

[security-announce] openSUSE-SU-2019:1952-1: moderate: Security update f
https://usn.ubuntu.com/4108-1/

USN-4108-1: Zstandard vulnerability | Ubuntu security notices
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00078.html

[security-announce] openSUSE-SU-2019:2008-1: moderate: Security update f
https://www.facebook.com/security/advisories/cve-2019-11922

Facebook
Vendor Advisory
https://github.com/facebook/zstd/pull/1404/commits/3e5cdf1b6a85843e991d7d10f6a2567c15580da0

fixed T36302471 by Cyan4973 · Pull Request #1404 · facebook/zstd · GitHub
Patch;Third Party Advisory

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Vulnerability Details : CVE-2019-11922

Products affected by CVE-2019-11922

Exploit prediction scoring system (EPSS) score for CVE-2019-11922

CVSS scores for CVE-2019-11922

CWE ids for CVE-2019-11922

References for CVE-2019-11922