Description
Buffer overflow in the policy_summarize function in or/policies.c in Tor before 0.2.1.30 allows remote attackers to cause a denial of service (directory authority crash) via a crafted policy that triggers creation of a long port list.
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 | tor | 0.2.1.30-1 | — |
| Debian 13 | tor | 0.2.1.30-1 | — |
| Debian 12 | tor | 0.2.1.30-1 | — |
References
- 43548 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=705194
- 44862 third-party-advisory
- 46618 vdb-entry
- https://gitweb.torproject.org/tor.git/commit/43414eb98821d3b5c6c65181d7545ce938f82c8e
- FEDORA-2011-7972 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=705192
- [tor-announce] 20110228 Tor 0.2.1.30 is released mailing-list