The init_nss_hash function in exec/totemcrypto.c in Corosync 2.0 before 2.3 does not…
Priority LOW 28Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The init_nss_hash function in exec/totemcrypto.c in Corosync 2.0 before 2.3 does not properly initialize the HMAC key, which allows remote attackers to cause a denial of service (crash) via a crafted packet.
Why it matters now
EPSS 0.03077 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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 · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:corosync:corosync:2.0.0:*:*:*:*:*:*:* | 2.0.0 | Vulnerable | Corosync |
| cpe:2.3:a:corosync:corosync:2.0.1:*:*:*:*:*:*:* | 2.0.1 | Vulnerable | Corosync |
| cpe:2.3:a:corosync:corosync:2.0.2:*:*:*:*:*:*:* | 2.0.2 | Vulnerable | Corosync |
| cpe:2.3:a:corosync:corosync:2.0.3:*:*:*:*:*:*:* | 2.0.3 | Vulnerable | Corosync |
| cpe:2.3:a:corosync:corosync:2.1.0:*:*:*:*:*:*:* | 2.1.0 | Vulnerable | Corosync |
| cpe:2.3:a:corosync:corosync:2.1.1:*:*:*:*:*:*:* | 2.1.1 | Vulnerable | Corosync |
| cpe:2.3:a:corosync:corosync:2.2.0:*:*:*:*:*:*:* | 2.2.0 | Vulnerable | Corosync |
- cpe:2.3:a:corosync:corosync:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·Corosync
- cpe:2.3:a:corosync:corosync:2.0.1:*:*:*:*:*:*:* Versions 2.0.1 Vulnerable ·Corosync
- cpe:2.3:a:corosync:corosync:2.0.2:*:*:*:*:*:*:* Versions 2.0.2 Vulnerable ·Corosync
- cpe:2.3:a:corosync:corosync:2.0.3:*:*:*:*:*:*:* Versions 2.0.3 Vulnerable ·Corosync
- cpe:2.3:a:corosync:corosync:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·Corosync
- cpe:2.3:a:corosync:corosync:2.1.1:*:*:*:*:*:*:* Versions 2.1.1 Vulnerable ·Corosync
- cpe:2.3:a:corosync:corosync:2.2.0:*:*:*:*:*:*:* Versions 2.2.0 Vulnerable ·Corosync
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2013-0250
- 2026-10-03 Alias added: GHSA-f3cv-gjqx-mcfh
References
Other 3
- [oss-security] 20130201 Re: CVE Request -- Corosync (X < 2.0.3): Remote DoS due improper HMAC initialization and improper junk filtering when different encryption keys used
- [oss-security] 20130201 Re: Re: CVE Request -- Corosync (X < 2.0.3): Remote DoS due improper HMAC initialization and improper junk filtering when different encryption keys used
- [oss-security] 20130201 CVE Request -- Corosync (X < 2.0.3): Remote DoS due improper HMAC initialization and improper junk filtering when different encryption keys used
More Corosync vulnerabilities
- TI-2025-21772 Stack-based buffer overflow in Corosync CVSS 3.1CRITICAL 9.8
- TI-2026-27291 Corosync: corosync: denial of service and information disclosure via crafted udp packet CVSS 3.1HIGH 8.2
- TI-2026-27292 Corosync: corosync: denial of service via integer overflow in join message validation CVSS 3.1HIGH 7.5
- TI-2018-01003 corosync before version 2.4.4 is vulnerable to an integer overflow in exec/totemcrypto.c. CVSS 3.1HIGH 7.5
Sources
- CVE-2013-0250 · CVE Program
- CVE-2013-0250 · NVD
- FIRST EPSS
- GHSA-f3cv-gjqx-mcfh · GitHub Advisory Database · CC BY 4.0
- CVE-2013-0250 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences