News
Vigil@nce: OpenLDAP, denial of service via ASN.1 BER
July 2008 by Vigil@nce
SYNTHESIS
A non authenticated attacker can send a malicious ASN.1 packet in
order to stop the service.
Gravity: 2/4
Consequences: denial of service of service
Provenance: intranet client
Means of attack: no proof of concept, no attack
Ability of attacker: expert (4/4)
Confidence: confirmed by the editor (5/5)
Diffusion of the vulnerable configuration: high (3/3)
Creation date: 01/07/2008
Identifier: VIGILANCE-VUL-7922
IMPACTED PRODUCTS
– OpenLDAP [confidential versions]
DESCRIPTION
The LDAP protocol uses the ASN.1 format encoded in BER (Basic
Encoding Rules).
If an element is too short, an assertion error occurs in the
ber_get_next() function of libraries/liblber/io.c file.
A non authenticated attacker can therefore send a malicious ASN.1
packet in order to stop the service.
CHARACTERISTICS
Identifiers: VIGILANCE-VUL-7922
