Vulnerability identifier: #VU21431
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-200
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Zcash
Client/Desktop applications /
Other client software
Vendor: Electric Coin Co.
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to an incorrect error handling implementation when performing deserialization of note plaintexts in Zcashd . A remote attacker gain knowledge of the IP address of a full node that owns a shielded address.
Successful vulnerability exploitation requires knowledge of zaddr.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Zcash: 2.0.0 - 2.0.7-2
External links
http://duke.leto.net/2019/10/01/zcash-metadata-leakage-cve-2019-16930.html
http://github.com/zcash/zcash/commit/c1fbf8ab5d73cff5e1f45236995857c75ba4128d
http://github.com/zcash/zcash/releases/tag/v2.0.7-3
http://z.cash/support/security/announcements/security-announcement-2019-09-24/
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.