CVE-2023-38039
When curl retrieves an HTTP response, it stores the incoming headers so that they can be accessed later via the libcurl headers API. However, curl did not have a limit in how many or how large headers
02 Description
When curl retrieves an HTTP response, it stores the incoming headers so that they can be accessed later via the libcurl headers API. However, curl did not have a limit in how many or how large headers
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 56.37% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 99.0% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2023-09-15 03:21Z3 YR AGO
- Last updated
- 2025-12-02 20:06Z11 MO AGO
- Reserved
- 2023-07-12
- Assigning CNA
- hackerone
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770Allocation of Resources Without Limits or ThrottlingBase
- Data version
- 5.2
- Document digest
- 7d201db4d965f6075780b9945de9577110b1c792dfdd2249ffe7f34a9a30929e
05 Affected products
06 References
- hackerone.comhttps://hackerone.com/reports/2072338
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TEAWTYHC3RT6ZRS5OZRHLAIENVN6CCIS/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5DCZMYODALBLVOXVJEN2LF2MLANEYL4F/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M6KGKB2JNZVT276JYSKI6FV2VFJUGDOJ/
- security.gentoo.orghttps://security.gentoo.org/glsa/202310-12
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20231013-0005/
- seclists.orghttp://seclists.org/fulldisclosure/2023/Oct/17
- support.apple.comhttps://support.apple.com/kb/HT214036
- www.insyde.comhttps://www.insyde.com/security-pledge/SA-2023064
- support.apple.comhttps://support.apple.com/kb/HT214063
- support.apple.comhttps://support.apple.com/kb/HT214057
- support.apple.comhttps://support.apple.com/kb/HT214058
- seclists.orghttp://seclists.org/fulldisclosure/2024/Jan/34
- seclists.orghttp://seclists.org/fulldisclosure/2024/Jan/37
- seclists.orghttp://seclists.org/fulldisclosure/2024/Jan/38
07 Fixed in
Debian 12
- curl Fixed in 7.88.1-10+deb12u3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- curl Fixed in 8.3.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- curl Fixed in 8.3.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- curl Fixed in 8.2.1-1ubuntu3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.