The client logging functionality in chronyd in Chrony before 1.23.1 does not restrict the…
Priority LOW 28CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
The client logging functionality in chronyd in Chrony before 1.23.1 does not restrict the amount of memory used for storage of client information, which allows remote attackers to cause a denial of service (memory consumption) via spoofed (1) NTP or (2) cmdmon packets.
Why it matters now
EPSS 0.02674 85th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:tuxfamily:chrony:*:*:*:*:*:*:*:* | up to 1.23-pre1 | Vulnerable | Tuxfamily |
| cpe:2.3:a:tuxfamily:chrony:1.18:*:*:*:*:*:*:* | 1.18 | Vulnerable | Tuxfamily |
| cpe:2.3:a:tuxfamily:chrony:1.19:*:*:*:*:*:*:* | 1.19 | Vulnerable | Tuxfamily |
| cpe:2.3:a:tuxfamily:chrony:1.19-1:*:*:*:*:*:*:* | 1.19-1 | Vulnerable | Tuxfamily |
| cpe:2.3:a:tuxfamily:chrony:1.19.99.1:*:*:*:*:*:*:* | 1.19.99.1 | Vulnerable | Tuxfamily |
| cpe:2.3:a:tuxfamily:chrony:1.19.99.2:*:*:*:*:*:*:* | 1.19.99.2 | Vulnerable | Tuxfamily |
| cpe:2.3:a:tuxfamily:chrony:1.19.99.3:*:*:*:*:*:*:* | 1.19.99.3 | Vulnerable | Tuxfamily |
| cpe:2.3:a:tuxfamily:chrony:1.20:*:*:*:*:*:*:* | 1.20 | Vulnerable | Tuxfamily |
| cpe:2.3:a:tuxfamily:chrony:1.21:*:*:*:*:*:*:* | 1.21 | Vulnerable | Tuxfamily |
| cpe:2.3:a:tuxfamily:chrony:1.21-pre1:*:*:*:*:*:*:* | 1.21-pre1 | Vulnerable | Tuxfamily |
- cpe:2.3:a:tuxfamily:chrony:*:*:*:*:*:*:*:* Versions up to 1.23-pre1 Vulnerable ·Tuxfamily
- cpe:2.3:a:tuxfamily:chrony:1.18:*:*:*:*:*:*:* Versions 1.18 Vulnerable ·Tuxfamily
- cpe:2.3:a:tuxfamily:chrony:1.19:*:*:*:*:*:*:* Versions 1.19 Vulnerable ·Tuxfamily
- cpe:2.3:a:tuxfamily:chrony:1.19-1:*:*:*:*:*:*:* Versions 1.19-1 Vulnerable ·Tuxfamily
- cpe:2.3:a:tuxfamily:chrony:1.19.99.1:*:*:*:*:*:*:* Versions 1.19.99.1 Vulnerable ·Tuxfamily
- cpe:2.3:a:tuxfamily:chrony:1.19.99.2:*:*:*:*:*:*:* Versions 1.19.99.2 Vulnerable ·Tuxfamily
- cpe:2.3:a:tuxfamily:chrony:1.19.99.3:*:*:*:*:*:*:* Versions 1.19.99.3 Vulnerable ·Tuxfamily
- cpe:2.3:a:tuxfamily:chrony:1.20:*:*:*:*:*:*:* Versions 1.20 Vulnerable ·Tuxfamily
- cpe:2.3:a:tuxfamily:chrony:1.21:*:*:*:*:*:*:* Versions 1.21 Vulnerable ·Tuxfamily
- cpe:2.3:a:tuxfamily:chrony:1.21-pre1:*:*:*:*:*:*:* Versions 1.21-pre1 Vulnerable ·Tuxfamily
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2010-0293
- 2026-10-03 Alias added: GHSA-3vvg-7h3p-gmv3
References
More Tuxfamily Chrony vulnerabilities
- TI-2016-01428 chrony before 1.31.2 and 2.x before 2.2.1 do not verify peer associations of symmetric… CVSS 3.0HIGH 8.1
- TI-2015-01638 Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to… CVSS 2.0MEDIUM 6.5
- TI-2015-01639 chrony before 1.31.1 does not initialize the last "next" pointer when saving… CVSS 2.0MEDIUM 6.5
- TI-2015-01664 chrony before 1.31.1 does not properly protect state variables in authenticated symmetric… CVSS 3.1MEDIUM 6.5
- TI-2012-03844 Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to… CVSS 2.0MEDIUM 5.0
- TI-2012-03845 cmdmon.c in Chrony before 1.29 allows remote attackers to obtain potentially sensitive… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2010-0293 · CVE Program
- CVE-2010-0293 · NVD
- FIRST EPSS
- GHSA-3vvg-7h3p-gmv3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences