Description
An integer overflow in WSS4J's DER bounds check lets an oversized allocation pass validation. An unauthenticated attacker can send a SOAP message carrying an X.509 certificate whose SubjectKeyIdentifier extension declares a length of 0x7FFFFFFF; WSS4J decodes this while resolving the signature's key reference, before the message is authenticated, so an eleven-byte extension triggers a 2 GB allocation. Repeated requests exhaust server memory.
Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache WSS4J | 4.0.0 – < 4.0.2, 3.0.0 – < 3.0.6, < 2.4.4 | 4.0.2 |
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 | wss4j | No fix yet | — |
| Debian 13 | wss4j | No fix yet | — |
| Debian 12 | wss4j | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | wss4j | No fix yet | — |
| Ubuntu 26.04 LTS | wss4j | No fix yet | — |
| Ubuntu 24.04 LTS | wss4j | No fix yet | — |
| Ubuntu 22.04 LTS | wss4j | No fix yet | — |
| Ubuntu 20.04 LTS | wss4j | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | wss4j | No fix yet | — |
| Ubuntu 16.04 LTS | wss4j | No fix yet | — |