CVE-2014-6277
GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, which allows remote attackers to...
- Published
- Sep 27, 2014
- Updated
- Aug 6, 2024
- Assigning CNA
- debian
- Evidence observed
- Sep 29, 2014
Primary CVSS
nvd · CVSS 2.0
AV:N/AC:L/Au:N/C:C/I:C/A:CHigh · next 30 days
- Percentile
- 99.4%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access, and untrusted-pointer read and write operations) 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 and CVE-2014-7169.
Sources
4Collection of Proof of Concepts and Potential Targets for #ShellShocker
@0x00string · linux · Oct 2, 2014
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