SB2021082037 - openEuler update for curl

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Use of Uninitialized Variable (CVE-ID: CVE-2021-22925)

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

The vulnerability exists due to usage of uninitialized variable in code, responsible for processing TELNET requests when parsing NEW_ENV variables. A remote attacker can force the affected application to connect to a telnet server under attackers control and read up to 1800 bytes from the uninitialized memory on the libcurl client system.

2) Improper Certificate Validation (CVE-ID: CVE-2021-22926)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to an error in the CURLOPT_SSLCERT option mixup with TLS library Secure Transport. A remote attacker can create a file name with the same name as the app wants to use by name, and thereby trick the application to use the file based cert instead of the one referred to by name making libcurl send the wrong client certificate in the TLS connection handshake.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1321