Remote code execution in Bouncy Castle

1) Deserialization of Untrusted Data

EUVDB-ID: #VU27499

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1000613

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data passed via the XMSS/XMSS^MT private key. A remote attacker can pass specially crafted data to the the Bouncy Castle Java Cryptography API and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

The Bouncy Castle Crypto Package For Java: 1.58 - 1.59

External links

http://github.com/bcgit/bc-java/commit/4092ede58da51af9a21e4825fbad0d9a3ef5a223#diff-2c06e2edef41db889ee14899e12bd574
http://github.com/bcgit/bc-java/commit/cd98322b171b15b3f88c5ec871175147893c31e6#diff-148a6c098af0199192d6aede960f45dc
http://security.netapp.com/advisory/ntap-20190204-0003/
http://www.oracle.com/security-alerts/cpuapr2020.html
http://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
http://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
http://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html

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.