CVE-2022-29240
Scylla CQL Decompression Buffer Initialization Vulnerability (Authentication Bypass and Sensitive Information Disclosure)
Description
Scylla is a real-time big data database that is API-compatible with Apache Cassandra and Amazon DynamoDB. When decompressing CQL frame received from user, Scylla assumes that user-provided uncompressed length is correct. If user provides fake length, that is greater than the real one, part of decompression buffer won't be overwritten, and will be left uninitialized. This can be exploited in several ways, depending on the privileges of the user. 1. The main exploit is that an attacker with access to CQL port, but no user account, can bypass authentication, but only if there are other legitimate clients making connections to the cluster, and they use LZ4. 2. Attacker that already has a user account on the cluster can read parts of uninitialized memory, which can contain things like passwords of other users or fragments of other queries / results, which leads to authorization bypass and sensitive information disclosure. The bug has been patched in the following versions: Scylla Enterprise: 2020.1.14, 2021.1.12, 2022.1.0. Scylla Open Source: 4.6.7, 5.0.3. Users unable to upgrade should make sure none of their drivers connect to cluster using LZ4 compression, and that Scylla CQL port is behind firewall. Additionally make sure no untrusted client can connect to Scylla, by setting up authentication and applying workarounds from previous point (firewall, no lz4 compression).
INFO
Published Date :
Sept. 15, 2022, 10:15 p.m.
Last Modified :
Sept. 21, 2022, 2:17 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-29240
.
URL | Resource |
---|---|
https://github.com/scylladb/scylla/security/advisories/GHSA-25pq-rrqm-6fmr | Third Party Advisory |
https://github.com/scylladb/scylladb/commit/1c2eef384da439b0457b6d71c7e37d7268e471cb | Patch Third Party Advisory |
https://github.com/scylladb/scylladb/issues/11476 | Issue Tracking Patch Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-29240
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-29240
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Sep. 21, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/scylladb/scylla/security/advisories/GHSA-25pq-rrqm-6fmr No Types Assigned https://github.com/scylladb/scylla/security/advisories/GHSA-25pq-rrqm-6fmr Third Party Advisory Changed Reference Type https://github.com/scylladb/scylladb/commit/1c2eef384da439b0457b6d71c7e37d7268e471cb No Types Assigned https://github.com/scylladb/scylladb/commit/1c2eef384da439b0457b6d71c7e37d7268e471cb Patch, Third Party Advisory Changed Reference Type https://github.com/scylladb/scylladb/issues/11476 No Types Assigned https://github.com/scylladb/scylladb/issues/11476 Issue Tracking, Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:scylladb:scylla:*:*:*:*:open_source:*:*:* versions up to (excluding) 4.6.7 *cpe:2.3:a:scylladb:scylla:*:*:*:*:open_source:*:*:* versions from (including) 5.0.0 up to (excluding) 5.0.3 *cpe:2.3:a:scylladb:scylla:*:*:*:*:enterprise:*:*:* versions up to (excluding) 2020.1.14 *cpe:2.3:a:scylladb:scylla:*:*:*:*:enterprise:*:*:* versions from (including) 2021.1.0 up to (excluding) 2021.1.12
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-29240
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-29240
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.20 }} 0.01%
score
0.57115
percentile