Resource exhaustion in Apple macOS
CVE-2023-28320
A denial of service vulnerability exists in curl <v8.1.0 in the way libcurl provides several different backends for resolving host names, selected at build time. If it is built to use the synchronous resolver, it allows name resolves to time-out slow operations using `alarm()` and `siglongjmp()`. When doing this, libcurl used a global buffer that was not mutex protected and a multi-threaded application might therefore crash or otherwise misbehave.
Vulnerability class: DoS (Denial of Service)
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: 0.027 (85.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1929597 (Exploit, Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20230609-0009/ (Third Party Advisory)
- support.apple.com/kb/HT213843 (Third Party Advisory)
- support.apple.com/kb/HT213844 (Third Party Advisory)
- support.apple.com/kb/HT213845 (Third Party Advisory)
- seclists.org/fulldisclosure/2023/Jul/52 (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2023/Jul/48 (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2023/Jul/47 (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202310-12 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-28320?
- CVE-2023-28320 is a medium-severity vulnerability in Apple macOS, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2023-05-26.
- How severe is CVE-2023-28320?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2023-28320 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.