From 96baad47ea91a9c20bcf89f9478dace825acc850 Mon Sep 17 00:00:00 2001
From: "advisory-database[bot]"
 <45398580+advisory-database[bot]@users.noreply.github.com>
Date: Mon, 7 Apr 2025 16:42:19 +0000
Subject: [PATCH] Publish GHSA-794x-2rpg-rfgr

---
 .../GHSA-794x-2rpg-rfgr.json                  | 78 +++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 advisories/github-reviewed/2025/04/GHSA-794x-2rpg-rfgr/GHSA-794x-2rpg-rfgr.json

diff --git a/advisories/github-reviewed/2025/04/GHSA-794x-2rpg-rfgr/GHSA-794x-2rpg-rfgr.json b/advisories/github-reviewed/2025/04/GHSA-794x-2rpg-rfgr/GHSA-794x-2rpg-rfgr.json
new file mode 100644
index 00000000000..c8ff9520d9f
--- /dev/null
+++ b/advisories/github-reviewed/2025/04/GHSA-794x-2rpg-rfgr/GHSA-794x-2rpg-rfgr.json
@@ -0,0 +1,78 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-794x-2rpg-rfgr",
+  "modified": "2025-04-07T16:40:25Z",
+  "published": "2025-04-07T16:40:25Z",
+  "aliases": [],
+  "summary": "Jujutsu does not have SHA-1 collision detection",
+  "details": "### Summary\nJujutsu 0.28.0 and earlier rely on versions of gitoxide that use SHA-1 hash implementations without any collision detection, leaving them vulnerable to hash collision attacks.\n\n### Details\nThis is a result of the underlying [CVE-2025-31130 / GHSA-2frx-2596-x5r6](https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-2frx-2596-x5r6) vulnerability in the gitoxide library Jujutsu uses to interact with Git repositories; see that advisory for technical details. This separate advisory is being issued due to the downstream impact on users of Jujutsu.\n\n### Impact\nAn attacker with the ability to mount a collision attack on SHA-1 like the [SHAttered](https://shattered.io/) or [SHA-1 is a Shambles](https://sha-mbles.github.io/) attacks could create two distinct Git objects with the same hash. This is becoming increasingly affordable for well‐resourced attackers, with the Shambles researchers in 2020 estimating $45k for a chosen‐prefix collision or $11k for a classical collision, and projecting less than $10k for a chosen‐prefix collision by 2025. The result could be used to disguise malicious repository contents, or potentially exploit assumptions in Jujutsu’s logic to cause further vulnerabilities.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "crates.io",
+        "name": "jj-lib"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "0.28.1"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "crates.io",
+        "name": "jj-cli"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "0.28.1"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/jj-vcs/jj/security/advisories/GHSA-794x-2rpg-rfgr"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/jj-vcs/jj/commit/350da7d013773377aec0d3a4bf4374d3c941460e"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/jj-vcs/jj"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-328"
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2025-04-07T16:40:25Z",
+    "nvd_published_at": null
+  }
+}
\ No newline at end of file