Signature wrapping attack in OSCI-Transport Library - CVE-2017-10669

 

Signature wrapping attack in OSCI-Transport Library - CVE-2017-10669

Published: July 5, 2017


Vulnerability identifier: #VU7319
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-10669
CWE-ID: CWE-776
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: KoSIT
Affected software:
OSCI-Transport Library

Detailed vulnerability description

The vulnerability allows a remote attacker to conduct a signature wrapping attack.

The weakness exists in the encryption library due to XML entity expansion. A remote attacker can move XML elements within the document tree and modify the contents of a signed message arbitrarily without invalidating the signature.

Successful exploitation of the vulnerability results in content modification.


How to mitigate CVE-2017-10669

Update to version 1.7.1.

Sources