Vulnerability Monitor

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CVE-2019-10056

An issue was discovered in Suricata 4.1.3. The code mishandles the case of sending a network packet with the right type, such that the function DecodeEthernet in decode-ethernet.c is executed a second time. At this point, the algorithm cuts the first part of the packet and doesn't determine the current length. Specifically, if the packet is exactly 28 long, in the first iteration it subtracts 14 bytes. Then, it is working with a packet length of 14. At this point, the case distinction says it is a valid packet. After that it casts the packet, but this packet has no type, and the program crashes at the type case distinction.

Published

2019-08-28T21:15:10.630

Last Modified

2024-11-21T04:18:17.930

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	suricata-ids	suricata	4.1.3	Yes
Application	suricata-ids	suricata	4.1.4	Yes

References

https://redmine.openinfosecfoundation.org/issues/2946 Exploit, Issue Tracking, Third Party Advisory ([email protected])
https://suricata-ids.org/2019/04/30/suricata-4-1-4-released/ Not Applicable, Release Notes, Vendor Advisory ([email protected])
https://redmine.openinfosecfoundation.org/issues/2946 Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://suricata-ids.org/2019/04/30/suricata-4-1-4-released/ Not Applicable, Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)