// For flags

CVE-2021-43565

golang.org/x/crypto: empty plaintext packet causes panic

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The x/crypto/ssh package before 0.0.0-20211202192323-5770296d904e of golang.org/x/crypto allows an attacker to panic an SSH server.

El paquete x/crypto/ssh versiones anteriores a 0.0.0-20211202192323-5770296d904e, de golang.org/x/crypto permite a un atacante entrar en pánico en un servidor SSH.

There's an input validation flaw in golang.org/x/crypto's readCipherPacket() function. An unauthenticated attacker who sends an empty plaintext packet to a program linked with golang.org/x/crypto/ssh could cause a panic, potentially leading to denial of service.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-11-09 CVE Reserved
  • 2022-03-04 CVE Published
  • 2024-03-29 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Golang
Search vendor "Golang"
 Ssh
Search vendor "Golang" for product "Ssh"
 < 0.0.0-20211202192323-5770296d904e
Search vendor "Golang" for product "Ssh" and version " < 0.0.0-20211202192323-5770296d904e"
-
Affected