Description
epan/dissectors/packet-ldap.c in Wireshark 1.0.x, 1.2.0 through 1.2.14, and 1.4.0 through 1.4.3 allows remote attackers to cause a denial of service (memory consumption) via (1) a long LDAP filter string or (2) an LDAP filter string containing many elements.
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 | wireshark | 1.4.4-1 | — |
| Debian 13 | wireshark | 1.4.4-1 | — |
| Debian 12 | wireshark | 1.4.4-1 | — |
| Debian 6.0 | wireshark | 1.2.11-6+squeeze1 | DSA-2201-1 |
| Debian 5.0 | wireshark | 1.0.2-3+lenny13 | DSA-2201-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | wireshark +2 | 1.2.15-1.el6_0.1 | RHSA-2011:0369 |
| RHEL 5 | wireshark +1 | 1.0.15-1.el5_6.4 | RHSA-2011:0370 |
| RHEL 4 | wireshark +1 | 1.0.15-2.el4 | RHSA-2011:0370 |
Advisories 3
- RHSA-2011:0370 Red Hat Security Advisory: wireshark security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2011:0369 Red Hat Security Advisory: wireshark security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2201-1 wireshark - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- 43759 third-party-advisory
- FEDORA-2011-2620 vendor-advisory
- http://www.wireshark.org/docs/relnotes/wireshark-1.2.15.html
- ADV-2011-0747 vdb-entry
- 43795 third-party-advisory
- VU#215900 third-party-advisory
- http://anonsvn.wireshark.org/viewvc?view=rev&revision=36101
- RHSA-2011:0370 vendor-advisory
- ADV-2011-0719 vdb-entry
- http://www.wireshark.org/docs/relnotes/wireshark-1.4.4.html
- FEDORA-2011-2632 vendor-advisory
- http://www.wireshark.org/security/wnpa-sec-2011-04.html
- ADV-2011-0622 vdb-entry
- http://www.wireshark.org/security/wnpa-sec-2011-03.html
- RHSA-2011:0369 vendor-advisory
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5732
- MDVSA-2011:044 vendor-advisory
- 1025148 vdb-entry
- DSA-2201 vendor-advisory
- oval:org.mitre.oval:def:14974 vdb-entry signature
- 43821 third-party-advisory