The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.
CVSS Details
- CVSS 3.1 Base Score: 5.3
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade strongswan | Dec 10, 2025 | Jan 27, 2014 |
| Gentoo Linux | — | Upgrade net-misc/strongswan. | Oct 30, 2017 | Aug 28, 2013 |
| Suse | — | Upgrade strongswan-nmUpgrade strongswanUpgrade strongswan-docUpgrade strongswan-libs0Upgrade strongswan-ikev2Upgrade strongswan-mysqlUpgrade strongswan-sqliteUpgrade strongswan-ikev1Upgrade strongswan-ipsec | Dec 12, 2013 | Aug 28, 2013 |
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