CVE-2023-25135 — CRITICAL (9.8)

Vulnerability Description

vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks that a value is serialized by calling unserialize and then checking for errors. The fixed versions are 5.6.7 PL1, 5.6.8 PL1, and 5.6.9 PL1.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Vbulletin	Vbulletin	5.6.7

Related Weaknesses (CWE)

CWE-502

References

https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcementRelease NotesVendor Advisory
https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachableExploitTechnical DescriptionThird Party Advisory
https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcementRelease NotesVendor Advisory
https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachableExploitTechnical DescriptionThird Party Advisory

FAQ

What is CVE-2023-25135?

CVE-2023-25135 is a vulnerability with a CVSS score of 9.8 (CRITICAL). vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks th...

How severe is CVE-2023-25135?

CVE-2023-25135 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2023-25135?

Check the references section above for vendor advisories and patch information. Affected products include: Vbulletin Vbulletin.