CVE-2017-2624
MEDIUM
5.9
CVSS Score
Published: July 27, 2018 at 06:00 PM UTC
Updated: June 17, 2026 at 01:16 AM UTC
2 products affected across 2 vendorsDebian LinuxX server
Using xorg-x11-server by Xorg?
Get instant alerts when new vulnerabilities affect xorg-x11-server - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.9
Exploit prediction
EPSS 0.7%
Description
It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (8)
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/96480VDB Entryx_refsource_SECTRACKThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1037919x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2624x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://gitlab.freedesktop.org/xorg/xserver/commit/d7ac755f0b618eb1259d93c8a16ec6e39a18627cMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2017/11/msg00032.htmlVendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/201704-03Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/201710-30x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/CVSS
5.9MEDIUMredhat
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-385CWE-200
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card