Double Free in Broadcom Brocade Fabric Operating System Firmware
CVE-2023-27537
A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate "handles". This sharing was introduced without considerations for do this sharing across separate threads but there was no indication of this fact in the documentation. Due to missing mutexes or thread locks, two threads sharing the same HSTS data could end up doing a double-free or use-after-free.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.019 (79.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: +0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1897203 (Exploit, Third Party Advisory)
- security.netapp.com/advisory/ntap-20230420-0010/ (Third Party Advisory)
- security.gentoo.org/glsa/202310-12 (vendor-advisory, Third Party Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2023-27537?
- CVE-2023-27537 is a medium-severity vulnerability in Broadcom Brocade Fabric Operating System Firmware, classified under Double Free. CVSS score: 5.9/10. Published 2023-03-30.
- How severe is CVE-2023-27537?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2023-27537 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.