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CVE-2023-1672

19
FAUCET Score

CVE-2023-1672 is a race condition vulnerability in the Tang server's key generation and rotation processes, affecting various versions of Fedora, Red Hat Enterprise Linux, and Tang Project software. This flaw creates a brief window where Tang private keys can be accessed by other processes on the same host. With a CVSS score of 5.3 (Medium), it requires adjacent network access and high attack complexity, but could lead to high confidentiality impact. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 14CPE matchmatch criteria
cpe:2.3:a:tang_project:tang:*:*:*:*:*:*:*:*
38CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
All Versions ImpactedCPE match
cpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 91st percentile among its peer group of 1,749 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.0 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: cbl2 tang 14-1 on CBL Mariner 2.0Fixed in: 14-1
microsoftpatch availablevia msrc
Product: 18348-16823Fixed in: 14-1
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: tang-0:7-8.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: tang-0:14-2.el9
View patch

Vendor Advisories (2)

microsoft2023-Jul/CVE-2023-1672Moderate

Race condition exists in the key generation and rotation functionality

Jul 11, 2023
redhatCVE-2023-1672Moderate

tang: Race condition exists in the key generation and rotation functionality

Jun 7, 2023

References

access.redhat.com / security/cve/CVE-2023-1672
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
github.com / latchset/tang/commit/8dbbed10870378f1b2c3cf3df2ea7edca7617096
Patch
lists.debian.org / debian-lts-announce/2023/11/msg00004.html
openwall.com / lists/oss-security/2023/06/15/1
ExploitMailing ListThird Party Advisory