CVE-2021-47827

Summary

WebSSH for iOS 14.16.10 contains a denial of service vulnerability in the mashREPL tool that allows attackers to crash the application by pasting malformed input. Attackers can trigger the vulnerability by copying a 300-character buffer of repeated 'A' characters into the mashREPL input field, causing the application to crash.

Affected Software

Weaknesses

• CWE-1284: Improper Validation of Specified Quantity in Input

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: partial

References

• https://www.exploit-db.com/exploits/49883
• https://apps.apple.com/mx/app/webssh-ssh-client/id497714887
• https://www.vulncheck.com/advisories/webssh-for-ios-mashrepl-denial-of-service

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