#VU27702 Resource exhaustion in Cryptacular - CVE-2020-7226
Vulnerability identifier: #VU27702
Vulnerability risk: Medium
CVSSv4.0: 6.6 [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]
CVE-ID:
CWE-ID:
CWE-400
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Cryptacular
Universal components / Libraries /
Software for developers
Vendor: Middleware Services
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources within CiphertextHeader.java in Cryptacular. A remote attacker can trigger excessive memory allocation during a decode operation, because the nonce array length associated with "new byte" may depend on untrusted input within the header of encoded data.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Cryptacular: 1.2.3
External links
https://github.com/vt-middleware/cryptacular/blob/fafccd07ab1214e3588a35afe3c361519129605f/src/main/java/org/cryptacular/CiphertextHeader.java#L153
https://github.com/vt-middleware/cryptacular/blob/master/src/main/java/org/cryptacular/CiphertextHeader.java#L153
https://github.com/vt-middleware/cryptacular/issues/52
https://lists.apache.org/thread.html/r380781f5b489cb3c818536cd3b3757e806bfe0bca188591e0051ac03@%3Ccommits.ws.apache.org%3E
https://lists.apache.org/thread.html/rc36b75cabb4d700b48035d15ad8b8c2712bb32123572a1bdaec2510a@%3Cdev.ws.apache.org%3E
https://lists.apache.org/thread.html/re04e4f8f0d095387fb6b0ff9016a0af8c93f42e1de93b09298bfa547@%3Ccommits.ws.apache.org%3E
https://lists.apache.org/thread.html/re7f46c4cc29a4616e0aa669c84a0eb34832e83a8eef05189e2e59b44@%3Cdev.ws.apache.org%3E
https://lists.apache.org/thread.html/rfa4647c58e375996e62a9094bffff6dc350ec311ba955b430e738945@%3Cdev.ws.apache.org%3E
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.
