CVE-2014-7169

critical-risk
Published 2014-09-25

GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variables, which allows remote attackers to write to files or possibly have unknown other impact via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-6271.

Do I need to act?

!
90.1% chance of exploitation in next 30 days
EPSS score — higher than 10% of all CVEs
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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15 public exploits available
34777, 34895, 34839 and 12 more
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (20)

Eos
Qts
Qts
Qts

Affected Vendors

Checkpoint Apple Arista Canonical Opensuse Oracle Debian Mageia Qnap Novell Redhat Gnu Suse Citrix Ibm F5 Vmware

References (321)

Third Party Advisory http://advisories.mageia.org/MGASA-2014-0393.html
Broken Link http://archives.neohapsis.com/archives/bugtraq/2014-10/0101.html
Third Party Advisory http://jvn.jp/en/jp/JVN55667175/index.html
Third Party Advisory http://jvndb.jvn.jp/jvndb/JVNDB-2014-000126
Third Party Advisory http://lcamtuf.blogspot.com/2014/09/quick-notes-about-bash-bug-its-impact.html
Third Party Advisory http://linux.oracle.com/errata/ELSA-2014-1306.html
Third Party Advisory http://linux.oracle.com/errata/ELSA-2014-3075.html
Third Party Advisory http://linux.oracle.com/errata/ELSA-2014-3077.html
Third Party Advisory http://linux.oracle.com/errata/ELSA-2014-3078.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00038.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00041.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00042.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00044.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00048.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00004.html
Mailing List http://lists.opensuse.org/opensuse-updates/2014-10/msg00023.html
Mailing List http://lists.opensuse.org/opensuse-updates/2014-10/msg00025.html
Mailing List http://marc.info/?l=bugtraq&m=141216207813411&w=2
Mailing List http://marc.info/?l=bugtraq&m=141216668515282&w=2
Mailing List http://marc.info/?l=bugtraq&m=141235957116749&w=2
and 301 more references
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99
/ 100
critical-risk
Severity 32/34 · Critical
Exploitability 34/34 · Critical
Exposure 33/34 · Critical