RCE in Gnu Bash
CVE-2016-0634
The expansion of '\h' in the prompt string in bash 4.3 allows remote authenticated users to execute arbitrary code via shell metacharacters placed in 'hostname' of a machine.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.037 (88.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Gnu Bash — versions 4.3
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert_us@oracle.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert_us@oracle.com (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)
- secalert_us@oracle.com (x_refsource_REDHAT, vendor-advisory)
- secalert_us@oracle.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert_us@oracle.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert_us@oracle.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secalert_us@oracle.com (x_refsource_REDHAT, vendor-advisory)
- secalert_us@oracle.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert_us@oracle.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert_us@oracle.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-0634?
- CVE-2016-0634 is a high-severity vulnerability in Gnu Bash, classified under OS Command Injection. CVSS score: 7.5/10. Published 2017-08-28.
- How severe is CVE-2016-0634?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-0634 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.