Vulnerability in Haxx Curl
CVE-2023-27533
A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (81.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.022 · change: +0.002
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1891474 (Exploit, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20230420-0011/ (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/04/msg00025.html (mailing-list, Mailing List)
- 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-2023-27533?
- CVE-2023-27533 is a high-severity vulnerability in Haxx Curl, classified under CWE-75. CVSS score: 8.8/10. Published 2023-03-30.
- How severe is CVE-2023-27533?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-27533 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.