Vulnerability · Published Oct 18, 2021 · Assigned by mitre
CVE-2021-41990
High 7.5
In plain English
A high-severity security flaw in the strongswan package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 6.9% (higher than 94% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)6.9%top 5.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | strongswan | 5.9.1-r3 | ALPINE-CVE-2021-41990 |
| Alpine:v3.21 | strongswan | 5.9.1-r3 | ALPINE-CVE-2021-41990 |
| Alpine:v3.22 | strongswan | 5.9.1-r3 | ALPINE-CVE-2021-41990 |
| Alpine:v3.23 | strongswan | 5.9.1-r3 | ALPINE-CVE-2021-41990 |
| Alpine:v3.24 | strongswan | 5.9.1-r3 | ALPINE-CVE-2021-41990 |
| Debian:12 | strongswan | 5.9.4-1 | DEBIAN-CVE-2021-41990 |
| Debian:13 | strongswan | 5.9.4-1 | DEBIAN-CVE-2021-41990 |
| Debian:14 | strongswan | 5.9.4-1 | DEBIAN-CVE-2021-41990 |
| Ubuntu:22.04:LTS | strongswan | 5.9.1-1ubuntu3.1 | UBUNTU-CVE-2021-41990 |
Affected products (as reported)
References
- https://github.com/strongswan/strongswan/releases/tag/5.9.4 x_refsource_MISC
- https://www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-%28cve-2021-41990%29.html x_refsource_CONFIRM
- DSA-4989 vendor-advisory, x_refsource_DEBIAN
- FEDORA-2021-0b37146973 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-b3df83339e vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-95fab6a482 vendor-advisory, x_refsource_FEDORA
- https://cert-portal.siemens.com/productcert/pdf/ssa-539476.pdf x_refsource_CONFIRM