zeek -- potential DoS vulnerabilities

2026-04-20 · VuXML entry

Tim Wojtulewicz of Corelight reports: A series of DNS messages containing long DNS compression chains can cause Zeek to spend a long time processing packets and potentially crash. Due to the fact that these packets can be received from remote hosts, this is a DoS risk. A specially-crafted LDAP search request can cause Zeek to spend a long time processing the packet, resulting in Zeek silently dropping the LDAP …

Affected versions

• zeek < 8.0.7

By system

0 still vulnerable, 1 fixed. Where VuXML applies (FreeBSD, DragonFly, FreeBSD's derivatives) a port is vulnerable while its version is in a range; pkgsrc says itself whether it lists a CVE of this advisory; OpenBSD and MidnightBSD keep no list this site reads, so their row is only an estimate: FreeBSD's ranges applied to upstream's version.