| Name | CVE-2013-5018 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| strongswan (PTS) | jessie, jessie (lts) | 5.2.1-6+deb8u11 | fixed |
| stretch (security) | 5.5.1-4+deb9u6 | fixed |
| stretch (lts), stretch | 5.5.1-4+deb9u7 | fixed |
| buster | 5.7.2-1+deb10u2 | fixed |
| buster (security) | 5.7.2-1+deb10u4 | fixed |
| bullseye (security), bullseye | 5.9.1-1+deb11u4 | fixed |
| bookworm (security), bookworm | 5.9.8-5+deb12u1 | fixed |
| sid, trixie | 5.9.13-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| strongswan | source | (unstable) | (not affected) | | | |
Notes
- strongswan <not-affected> (Only affects 5.0.4 from experimental)
The PEM aspect is under control of the administrator, so not a security issue
The XAuth / EAP Issue only affects 5.0.3/5.0.4