Vulnerability in Broadcom Brocade Fabric Operating System Firmware
CVE-2021-28153
An issue was discovered in GNOME GLib before 2.66.8. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION to replace a path that is a dangling symlink, it incorrectly also creates the target of the symlink as an empty file, which could conceivably have security relevance if the symlink is attacker-controlled. (If the path is a symlink to a file that already exists, then the contents of that file correctly remain unchanged.)
EPSS: 0.026 (83.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Broadcom Brocade_fabric_operating_system_firmware
- Gnome Glib
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 33
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28153?
- CVE-2021-28153 is a medium-severity vulnerability in Broadcom Brocade Fabric Operating System Firmware, classified under Improper Link Resolution Before File Access. CVSS score: 5.3/10. Published 2021-03-11.
- How severe is CVE-2021-28153?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-28153 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.