Headline
CVE-2023-32001
libcurl can be told to save cookie, HSTS and/or alt-svc data to files. When
doing this, it called stat() followed by fopen() in a way that made it
vulnerable to a TOCTOU race condition problem.
By exploiting this flaw, an attacker could trick the victim to create or overwrite protected files holding this data in ways it was not intended to.
Related news
IBM QRadar WinCollect Agent 10.0 through 10.1.7 could allow a privileged user to obtain sensitive information due to missing best practices. IBM X-Force ID: 213551.
Gentoo Linux Security Advisory 202310-12 - Multiple vulnerabilities have been discovered in curl, the worst of which could result in arbitrary code execution. Versions greater than or equal to 8.3.0-r2 are affected.
Ubuntu Security Notice 6237-3 - USN-6237-1 fixed several vulnerabilities in curl. This update provides the corresponding updates for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. Hiroki Kurosawa discovered that curl incorrectly handled validating certain certificate wildcards. A remote attacker could possibly use this issue to spoof certain website certificates using IDN hosts.
Debian Linux Security Advisory 5460-1 - It was discovered that Curl performed incorrect file path handling when saving cookies to files, which could lead to the creation or overwriting of files.
Ubuntu Security Notice 6237-2 - USN-6237-1 fixed vulnerabilities in curl. The update caused a certificate wildcard handling regression on Ubuntu 22.04 LTS. This update fixes the problem. Hiroki Kurosawa discovered that curl incorrectly handled validating certain certificate wildcards. A remote attacker could possibly use this issue to spoof certain website certificates using IDN hosts. Hiroki Kurosawa discovered that curl incorrectly handled callbacks when certain options are set by applications. This could cause applications using curl to misbehave, resulting in information disclosure, or a denial of service. It was discovered that curl incorrectly handled saving cookies to files. A local attacker could possibly use this issue to create or overwrite files. This issue only affected Ubuntu 22.10, and Ubuntu 23.04.
Ubuntu Security Notice 6237-1 - Hiroki Kurosawa discovered that curl incorrectly handled validating certain certificate wildcards. A remote attacker could possibly use this issue to spoof certain website certificates using IDN hosts. Hiroki Kurosawa discovered that curl incorrectly handled callbacks when certain options are set by applications. This could cause applications using curl to misbehave, resulting in information disclosure, or a denial of service.