openEuler update for curl



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-28322
CVE-2023-28321
CWE-ID CWE-440
CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openEuler
Operating systems & Components / Operating system

curl-help
Operating systems & Components / Operating system package or component

curl-debuginfo
Operating systems & Components / Operating system package or component

libcurl-devel
Operating systems & Components / Operating system package or component

libcurl
Operating systems & Components / Operating system package or component

curl-debugsource
Operating systems & Components / Operating system package or component

curl
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Expected behavior violation

EUVDB-ID: #VU76238

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-28322

CWE-ID: CWE-440 - Expected Behavior Violation

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to a logic error when sending HTTP POST and PUT requests using the same handle. The libcurl can erroneously use the read callback (CURLOPT_READFUNCTION) to ask for data to send, even when the CURLOPT_POSTFIELDS option has been set, if the same handle previously was used to issue a PUT request which used that callback. As a result, the application can misbehave and either send off the wrong data or use memory after free or similar in the second transfer.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

curl-help: before 7.71.1-27

curl-debuginfo: before 7.71.1-27

libcurl-devel: before 7.71.1-27

libcurl: before 7.71.1-27

curl-debugsource: before 7.71.1-27

curl: before 7.71.1-27

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1346


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 certificate validation

EUVDB-ID: #VU76237

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-28321

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to improper certificate validation when matching wildcards in TLS certificates for IDN names. A remote attacker crate a specially crafted certificate that will be considered trusted by the library.

Successful exploitation of the vulnerability requires that curl is built to use OpenSSL, Schannel or Gskit.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

curl-help: before 7.71.1-27

curl-debuginfo: before 7.71.1-27

libcurl-devel: before 7.71.1-27

libcurl: before 7.71.1-27

curl-debugsource: before 7.71.1-27

curl: before 7.71.1-27

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1346


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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