Description
Multiple integer overflows in Dibbler 0.6.0 allow remote attackers to cause a denial of service (daemon crash) via packets containing options with large lengths, which trigger attempts at excessive memory allocation, as demonstrated by (1) the TSrvMsg constructor in SrvMessages/SrvMsg.cpp; the (2) TClntMsg, (3) TClntOptIAAddress, (4) TClntOptIAPrefix, (5) TOptVendorSpecInfo, and (6) TOptOptionRequest constructors; and the (7) TRelIfaceMgr::decodeRelayRepl, (8) TRelMsg::decodeOpts, and (9) TSrvIfaceMgr::decodeRelayForw methods.
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 13 | dibbler | 0.6.1-1 | — |
| Debian 12 | dibbler | 0.6.1-1 | — |
References
- dibbler-optionlength-dos(36684) vdb-entry
- 20070918 [MU-200709-02] Dibbler Remote Denial of Service Vulnerability mailing-list
- 40568 vdb-entry
- 26876 third-party-advisory
- http://klub.com.pl/dhcpv6/
- http://labs.musecurity.com/wp-content/uploads/2007/09/mu-200709-02.txt
- 25726 vdb-entry