Ubuntu update for curl



Published: 2022-07-01
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-27781
CVE-2022-32208
CWE-ID CWE-835
CWE-347
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

libcurl3 (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.

1) Infinite loop

EUVDB-ID: #VU63008

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-27781

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when handling requests with the CURLOPT_CERTINFO option. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Update the affected package curl to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

curl (Ubuntu package): before 7.47.01u buntu2.19+esm4

libcurl3 (Ubuntu package): before 7.47.01u buntu2.19+esm4

libcurl3-nss (Ubuntu package): before 7.47.01u buntu2.19+esm4

libcurl3-gnutls (Ubuntu package): before 7.47.01u buntu2.19+esm4

External links

http://ubuntu.com/security/notices/USN-5499-1


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.

2) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU64685

Risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32208

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to improper handling of message verification failures when performing FTP transfers secured by krb5. A remote attacker can perform MitM attack and manipulate data.

Mitigation

Update the affected package curl to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

curl (Ubuntu package): before 7.47.01u buntu2.19+esm4

libcurl3 (Ubuntu package): before 7.47.01u buntu2.19+esm4

libcurl3-nss (Ubuntu package): before 7.47.01u buntu2.19+esm4

libcurl3-gnutls (Ubuntu package): before 7.47.01u buntu2.19+esm4

External links

http://ubuntu.com/security/notices/USN-5499-1


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.



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