Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2022-43551 CVE-2022-43552 |
CWE-ID | CWE-254 CWE-416 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system curl (Ubuntu package) Operating systems & Components / Operating system package or component libcurl4 (Ubuntu package) Operating systems & Components / Operating system package or component libcurl3-nss (Ubuntu package) Operating systems & Components / Operating system package or component libcurl3-gnutls (Ubuntu package) Operating systems & Components / Operating system package or component |
Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU70457
Risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-43551
CWE-ID:
CWE-254 - Security Features
Exploit availability: No
DescriptionThe vulnerability allows an attacker to gain access to sensitive information.
The vulnerability exists in the way curl handles IDN characters in hostnames. The HSTS mechanism could be bypassed if the hostname in the given URL first uses IDN characters that get replaced to ASCII counterparts as part of the IDN conversion. Then in a subsequent request it does not detect the HSTS state and makes a clear text transfer.
MitigationUpdate the affected package curl to the latest version.
Vulnerable software versionsUbuntu: 18.04 - 22.10
curl (Ubuntu package): before 7.85.0-1ubuntu0.2
libcurl4 (Ubuntu package): before 7.85.0-1ubuntu0.2
libcurl3-nss (Ubuntu package): before 7.85.0-1ubuntu0.2
libcurl3-gnutls (Ubuntu package): before 7.85.0-1ubuntu0.2
External linkshttp://ubuntu.com/security/notices/USN-5788-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU70456
Risk: Low
CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-43552
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error while processing denied requests from HTTP proxies when using SMB or TELNET protocols. A remote attacker can trigger a use-after-free error and crash the application.
Update the affected package curl to the latest version.
Vulnerable software versionsUbuntu: 18.04 - 22.10
curl (Ubuntu package): before 7.85.0-1ubuntu0.2
libcurl4 (Ubuntu package): before 7.85.0-1ubuntu0.2
libcurl3-nss (Ubuntu package): before 7.85.0-1ubuntu0.2
libcurl3-gnutls (Ubuntu package): before 7.85.0-1ubuntu0.2
External linkshttp://ubuntu.com/security/notices/USN-5788-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.