Description
Internet2 Shibboleth Service Provider software 1.3.x before 1.3.3 and 2.x before 2.2.1, when using PKIX trust validation, does not properly handle a '\0' character in the subject or subjectAltName fields of a certificate, which allows remote man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | opensaml | 3.0.0-2 | — |
| Debian 14 | shibboleth-sp | 3.0.2+dfsg1-2 | — |
| Debian 14 | xmltooling | 1.2.2-1 | — |
| Debian 13 | opensaml | 3.0.0-2 | — |
| Debian 13 | shibboleth-sp | 3.0.2+dfsg1-2 | — |
| Debian 13 | xmltooling | 1.2.2-1 | — |
| Debian 12 | opensaml | 3.0.0-2 | — |
| Debian 12 | shibboleth-sp | 3.0.2+dfsg1-2 | — |
| Debian 12 | xmltooling | 1.2.2-1 | — |
| Debian 5.0 | opensaml | 1.1.1-2+lenny1 | DSA-1896-1 |
| Debian 5.0 | opensaml2 | 2.0-2+lenny1 | DSA-1895-2 |
| Debian 5.0 | shibboleth-sp | 1.3.1.dfsg1-3+lenny1 | DSA-1896-1 |
| Debian 5.0 | shibboleth-sp2 | 2.0.dfsg1-4+lenny1 | DSA-1895-2 |
| Debian 5.0 | xmltooling | 1.0-2+lenny1 | DSA-1895-1 |
| Debian 4.0 | opensaml | 1.1a-2+etch1 | DSA-1896-1 |
| Debian 4.0 | shibboleth-sp | 1.3f.dfsg1-2+etch1 | DSA-1896-1 |
Advisories 3
- DSA-1895-1 xmltooling - potential code execution Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1896-1 opensaml shibboleth-sp - potential code execution Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1895-2 opensaml2, shibboleth-sp2 - interpretation conflict Debian Security (DSA / DLA) · Mar 9, 2026