Description
ajaxterm.js in AjaxTerm 0.10 and earlier generates session IDs with predictable random numbers based on certain JavaScript functions, which makes it easier for remote attackers to (1) hijack a session or (2) cause a denial of service (session ID exhaustion) via a brute-force attack.
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 5.0 | ajaxterm | 0.10-2+lenny1 | DSA-1994-1 |
| Debian 4.0 | ajaxterm | 0.9-2+etch1 | DSA-1994-1 |
Advisories 1
- DSA-1994-1 ajaxterm - session hijacking Debian Security (DSA / DLA) · Mar 9, 2026
References
- 20090511 [oCERT-2009-004] AjaxTerm session id collision mailing-list
- FEDORA-2010-18867 vendor-advisory
- [oss-security] 20090511 [oCERT-2009-004] AjaxTerm session id collision mailing-list
- http://www.ocert.org/advisories/ocert-2009-004.html
- 34903 vdb-entry
- 42784 third-party-advisory
- ajaxterm-ajaxterm-session-hijacking(50464) vdb-entry