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Fencer Vulns
high 7.5

CVE-2007-4752 json

ssh in OpenSSH before 4.7 does not properly handle when an untrusted cookie cannot be created and uses a trusted X11 cookie instead, which…

published 2007-09-12 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-4733

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

ssh in OpenSSH before 4.7 does not properly handle when an untrusted cookie cannot be created and uses a trusted X11 cookie instead, which allows attackers to violate intended policy and gain privileges by causing an X client to be treated as trusted.

Patch / fix

  • openssh Debian 14, Debian 13, Debian 12 1:4.7p1-1

debian advisories DEBIAN-CVE-2007-4752

  • openssh RHEL 4 3.9p1-11.el4_7
  • openssh RHEL 5 4.3p2-26.el5_2.1
  • openssh-server RHEL 4 3.9p1-11.el4_7
  • openssh-server RHEL 5 4.3p2-26.el5_2.1
  • openssh-askpass RHEL 4 3.9p1-11.el4_7
  • openssh-askpass RHEL 5 4.3p2-26.el5_2.1
  • openssh-clients RHEL 4 3.9p1-11.el4_7
  • openssh-clients RHEL 5 4.3p2-26.el5_2.1

red hat advisories RHSA-2008:0855

  • openssh openSUSE Tumbleweed 8.4p1-7.4

opensuse advisories openSUSE-SU-2024:11124-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2007-4752 updated

openssh falls back to the trusted x11 cookie if generation of an untrusted cookie fails

  • Red Hat Enterprise Linux (v. 5 server) openssh 4.3p2-26.el5_2.1, openssh-server 4.3p2-26.el5_2.1, openssh-askpass 4.3p2-26.el5_2.1, openssh-clients 4.3p2-26.el5_2.1 Red Hat Enterprise Linux AS EUS (v. 4.5) openssh 3.9p1-10.RHEL4.20, openssh-server 3.9p1-10.RHEL4.20, openssh-askpass 3.9p1-10.RHEL4.20, openssh-clients 3.9p1-10.RHEL4.20, openssh-askpass-gnome 3.9p1-10.RHEL4.20 Red Hat Enterprise Linux AS version 4 openssh 3.9p1-11.el4_7, openssh-server 3.9p1-11.el4_7, openssh-askpass 3.9p1-11.el4_7, openssh-clients 3.9p1-11.el4_7, openssh-askpass-gnome 3.9p1-11.el4_7 Red Hat Enterprise Linux Desktop (v. 5 client) openssh 4.3p2-26.el5_2.1, openssh-server 4.3p2-26.el5_2.1, openssh-askpass 4.3p2-26.el5_2.1, openssh-clients 4.3p2-26.el5_2.1 Red Hat Enterprise Linux Desktop version 4 openssh 3.9p1-11.el4_7, openssh-server 3.9p1-11.el4_7, openssh-askpass 3.9p1-11.el4_7, openssh-clients 3.9p1-11.el4_7, openssh-askpass-gnome 3.9p1-11.el4_7 Red Hat Enterprise Linux ES EUS (v. 4.5) openssh 3.9p1-10.RHEL4.20, openssh-server 3.9p1-10.RHEL4.20, openssh-askpass 3.9p1-10.RHEL4.20, openssh-clients 3.9p1-10.RHEL4.20, openssh-askpass-gnome 3.9p1-10.RHEL4.20
    +2 more products
    Red Hat Enterprise Linux ES version 4 openssh 3.9p1-11.el4_7, openssh-server 3.9p1-11.el4_7, openssh-askpass 3.9p1-11.el4_7, openssh-clients 3.9p1-11.el4_7, openssh-askpass-gnome 3.9p1-11.el4_7 Red Hat Enterprise Linux WS version 4 openssh 3.9p1-11.el4_7, openssh-server 3.9p1-11.el4_7, openssh-askpass 3.9p1-11.el4_7, openssh-clients 3.9p1-11.el4_7, openssh-askpass-gnome 3.9p1-11.el4_7
    fixed: vendor fix RHSA-2008:0855

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.37% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.