SB2026060564 - openEuler 20.03 LTS SP4 update for rsync
Published: June 5, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2026-43618)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to an integer overflow in the compressed-token decoder when processing compressed token data from an authenticated daemon connection. A remote user can send crafted compressed-token data to disclose sensitive information.
The disclosed memory may include environment variables, passwords, heap data, and library pointers.
2) Out-of-bounds read (CVE-ID: CVE-2026-43620)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in recv_files() when processing a crafted file list and transfer record from a malicious server. A remote attacker can send a crafted file list and transfer record to cause a denial of service.
The issue is reachable by any client pulling from a malicious server, and no special options are required on the victim because inc_recurse is the protocol-30+ default.
3) Off-by-one (CVE-ID: CVE-2026-45232)
CWE-ID: CWE-193 - Off-by-one Error
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an off-by-one out-of-bounds stack write in establish_proxy_connection() in socket.c when processing the first response line from an HTTP CONNECT proxy. A remote attacker can return a pathological proxy response line without a newline terminator to cause a denial of service.
The issue is reachable only on the client side when RSYNC_PROXY is set, and the written byte is a fixed \0.
Remediation
Install update from vendor's website.