From 3333e633a8f57d16e50d829ad660c65cf8059cfb Mon Sep 17 00:00:00 2001 From: "advisory-database[bot]" <45398580+advisory-database[bot]@users.noreply.github.com> Date: Mon, 25 Sep 2023 21:44:40 +0000 Subject: [PATCH] Publish GHSA-55g7-9cwv-5qfv --- .../09/GHSA-55g7-9cwv-5qfv/GHSA-55g7-9cwv-5qfv.json | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/advisories/github-reviewed/2023/09/GHSA-55g7-9cwv-5qfv/GHSA-55g7-9cwv-5qfv.json b/advisories/github-reviewed/2023/09/GHSA-55g7-9cwv-5qfv/GHSA-55g7-9cwv-5qfv.json index 5e5b69a1af8..534c2e6d4ff 100644 --- a/advisories/github-reviewed/2023/09/GHSA-55g7-9cwv-5qfv/GHSA-55g7-9cwv-5qfv.json +++ b/advisories/github-reviewed/2023/09/GHSA-55g7-9cwv-5qfv/GHSA-55g7-9cwv-5qfv.json @@ -1,10 +1,10 @@ { "schema_version": "1.4.0", "id": "GHSA-55g7-9cwv-5qfv", - "modified": "2023-09-25T18:30:18Z", + "modified": "2023-09-25T21:43:08Z", "published": "2023-09-25T18:30:18Z", "aliases": [ - + "CVE-2023-43642" ], "summary": "snappy-java's missing upper bound check on chunk length can lead to Denial of Service (DoS) impact", "details": "### Summary\n\nsnappy-java is a data compression library in Java. Its SnappyInputStream was found to be vulnerable to Denial of Service (DoS) attacks when decompressing data with a too-large chunk size. Due to missing upper bound check on chunk length, an unrecoverable fatal error can occur. \n\n### Scope\n\nAll versions of snappy-java including the latest released version 1.1.10.3. A fix is applied in 1.1.10.4\n\n### Details\nWhile performing mitigation efforts related to [CVE-2023-34455](https://nvd.nist.gov/vuln/detail/CVE-2023-34455) in Confluent products, our Application Security team closely analyzed the fix that was accepted and merged into snappy-java version 1.1.10.1 in [this](https://github.com/xerial/snappy-java/commit/3bf67857fcf70d9eea56eed4af7c925671e8eaea) commit. The check on [line 421](https://github.com/xerial/snappy-java/commit/3bf67857fcf70d9eea56eed4af7c925671e8eaea#diff-c3e53610267092989965e8c7dd2d4417d355ff7f560f9e8075b365f32569079fR421) only attempts to check if chunkSize is not a negative value. We believe that this is an inadequate fix as it misses an upper-bounds check for overly positive values such as 0x7FFFFFFF (or (2,147,483,647 in decimal) before actually [attempting to allocate](https://github.com/xerial/snappy-java/commit/3bf67857fcf70d9eea56eed4af7c925671e8eaea#diff-c3e53610267092989965e8c7dd2d4417d355ff7f560f9e8075b365f32569079fR429) the provided unverified number of bytes via the “chunkSize” variable. This missing upper-bounds check can lead to the applications depending upon snappy-java to allocate an inappropriate number of bytes on the heap which can then cause an java.lang.OutOfMemoryError exception. Under some specific conditions and contexts, this can lead to a Denial-of-Service (DoS) attack with a direct impact on the availability of the dependent implementations based on the usage of the snappy-java library for compression/decompression needs.\n\n### PoC\nCompile and run the following code:\n```\npackage org.example;\nimport org.xerial.snappy.SnappyInputStream;\n\nimport java.io.*;\n\npublic class Main {\n\n public static void main(String[] args) throws IOException {\n byte[] data = {-126, 'S', 'N', 'A', 'P', 'P', 'Y', 0, 0, 0, 0, 0, 0, 0, 0, 0,(byte) 0x7f, (byte) 0xff, (byte) 0xff, (byte) 0xff};\n SnappyInputStream in = new SnappyInputStream(new ByteArrayInputStream(data));\n byte[] out = new byte[50];\n try {\n in.read(out);\n }\n catch (Exception ignored) {\n }\n }\n}\n```\n\n### Impact\nDenial of Service of applications dependent on snappy-java especially if `ExitOnOutOfMemoryError` or `CrashOnOutOfMemoryError` is configured on the JVM.\n\n### Credits\nJan Werner, Mukul Khullar and Bharadwaj Machiraju from Confluent's Application Security team. \n\nWe kindly request for a new CVE ID to be assigned once you acknowledge this vulnerability.", @@ -48,6 +48,10 @@ "type": "WEB", "url": "https://github.com/xerial/snappy-java/security/advisories/GHSA-55g7-9cwv-5qfv" }, + { + "type": "ADVISORY", + "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43642" + }, { "type": "WEB", "url": "https://github.com/xerial/snappy-java/commit/9f8c3cf74223ed0a8a834134be9c917b9f10ceb5" @@ -63,7 +67,7 @@ ], "database_specific": { "cwe_ids": [ - + "CWE-770" ], "severity": "HIGH", "github_reviewed": true,