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Advisories

Vikunja before 2.7.1 Memory Exhaustion via Unbounded Avatar Size Cache

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Severity
high
Date
Affecting

  • vikunja >= 0, < 2.7.1

CWE
  • CWE-770 Allocation of Resources Without Limits or Throttling
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
NotAFlightRisk
Description
Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by requesting avatars at many distinct sizes. Attackers can upload a noisy avatar and fetch it at each size up to 1024, caching roughly a gigabyte per account without eviction and causing the API process to be OOM-killed.

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