Denial of service in Go Crypto
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-9283 |
| CWE-ID | CWE-617 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
crypto Universal components / Libraries / Libraries used by multiple products |
| Vendor |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Reachable Assertion
EUVDB-ID: #VU69447
Risk: Medium
CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2020-9283
CWE-ID:
CWE-617 - Reachable Assertion
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion during signature verification process. A remote attacker can supply a specially crafted certificate to the application (server or client) and perform a denial of service (DoS) attack.
Install updates from vendor's website.
Vulnerable software versionscrypto: before 0.0.0-20200220183623-bac4c82f6975
External linkshttp://groups.google.com/forum/#!topic/golang-announce/3L45YRc91SY
http://packetstormsecurity.com/files/156480/Go-SSH-0.0.2-Denial-Of-Service.html
http://lists.debian.org/debian-lts-announce/2020/10/msg00014.html
http://lists.debian.org/debian-lts-announce/2020/11/msg00027.html
http://lists.debian.org/debian-lts-announce/2020/11/msg00031.html
http://packetstormsecurity.com/files/156480/Go-SSH-0.0.2-Denial-Of-Service.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. However, proof of concept for this vulnerability is available.
