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GHSA-xvrc-2wvh-49vc
No affected components available
Impact
In certain versions of gitsign, Rekor public keys were fetched via the Rekor API, instead of through the local TUF client. If the upstream Rekor server happened to be compromised, gitsign clients could potentially be tricked into trusting incorrect signatures.
There is no known compromise the default public good instance (rekor.sigstore.dev) - anyone using this instance is unlikely to be affected.
Patches
This was fixed in v0.8.0 via https://github.com/sigstore/gitsign/pull/399
Workarounds
n/a
References
Are there any links users can visit to find out more?
https://docs.sigstore.dev/about/threat-model/#sigstore-threat-model
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs high-level or administrative privileges. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the integrity of the data.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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