Description
curl can be told to parse a `.netrc` file for credentials. If that file endsin a line with 4095 consecutive non-white space letters and no newline, curlwould first read past the end of the stack-based buffer, and if the readworks, write a zero byte beyond its boundary.This will in most cases cause a segfault or similar, but circumstances might also cause different outcomes.If a malicious user can provide a custom netrc file to an application or otherwise affect its contents, this flaw could be used as denial-of-service.
Affected products
haxx: curl; netapp: clustered data ontap; netapp: h300s firmware; netapp: h300s; netapp: h500s firmware; netapp: h500s; netapp: h700s firmware; netapp: h700s; netapp: h410s firmware; netapp: h410s; apple: macos; splunk: universal forwarder
References10
- hackerone.com/reports/1721098 ExploitPatchThird Party Advisory
- hackerone.com/reports/1721098 ExploitPatchThird Party Advisory
- seclists.org/fulldisclosure/2023/Jan/19 Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2023/Jan/20 Mailing ListThird Party Advisory
- security.gentoo.org/glsa/202212-01 Third Party Advisory
- security.netapp.com/advisory/ntap-20230110-0006/ Third Party Advisory
- support.apple.com/kb/HT213604 Third Party Advisory
- support.apple.com/kb/HT213605 Third Party Advisory
- seclists.org/fulldisclosure/2023/Jan/19 Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2023/Jan/20 Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 3% percentile: 86 · as of 6 November 2026
- CWE
- CWE-125CWE-787
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.