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GHSA-hvp4-vrv2-8wrq

HighCVSS 8.6 / 10
Published Feb 8, 2024·Last modified Dec 5, 2024
Affected Components(0)

No affected components available

Description

Impact

The attachment file of an existing record can be replaced if the user has "read" permission on one of the parent (collection or bucket).

And if the "read" permission is given to "system.Everyone" on one of the parent, then the attachment can be replaced on a record using an anonymous request.

Note that if the parent has no explicit read permission, then the records attachments are safe.

Patches

  • Patch released in kinto-attachment 6.4.0
  • https://github.com/Kinto/kinto-attachment/commit/f4a31484f5925cbc02b59ebd37554538ab826ca1

Workarounds

None if the read permission has to remain granted.

Updating to 6.4.0 or applying the patch individually (if updating is not feasible) is strongly recommended.

References

  • https://bugzilla.mozilla.org/show_bug.cgi?id=1879034
Risk Scores
Base Score
8.6

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the integrity of the data.

Threat Intelligence
7.9

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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