curl regression

2023-07-1917:34:44

Google

osv.dev

curl

vulnerability fix

certificate handling

regression

ubuntu 22.04 lts

security update

information disclosure

denial of service

saving cookies

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

7.2 High

AI Score

Confidence

Low

0.002 Low

EPSS

Percentile

56.6%

JSON

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.

We apologize for the inconvenience.

Original advisory details:

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. (CVE-2023-28321)

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. (CVE-2023-28322)

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. (CVE-2023-32001)