SB2026100151 - openEuler 22.03 LTS SP4 update for botan2
Published: October 1, 2026 Updated: October 1, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2026-32877)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service and disclose sensitive information.
The vulnerability exists due to out-of-bounds read in the SM2 decryption authentication code value (C3) check when processing a crafted SM2 ciphertext with an undersized C3 hash field. A remote attacker can send a specially crafted SM2 ciphertext to cause a denial of service and disclose sensitive information.
The over-read is limited to up to 31 bytes and may result in other undefined behavior.
2) Inefficient Algorithmic Complexity (CVE-ID: CVE-2026-44378)
CWE-ID: CWE-407 - Inefficient Algorithmic Complexity
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to inefficient algorithmic complexity in the BER parser when parsing indefinite length encodings in ASN.1 encoded data. A remote attacker can send specially crafted ASN.1 data to cause a denial of service.
This can be triggered with ASN.1 encoded inputs such as an X.509 certificate or OCSP response.
Remediation
Install update from vendor's website.