Vulnerability Details : CVE-2021-43823
Sourcegraph is a code search and navigation engine. Sourcegraph prior to version 3.33.2 is vulnerable to a side-channel attack where strings in private source code could be guessed by an authenticated but unauthorized actor. This issue affects the Saved Searches and Code Monitoring features. A successful attack would require an authenticated bad actor to create many Saved Searches or Code Monitors to receive confirmation that a specific string exists. This could allow an attacker to guess formatted tokens in source code, such as API keys. This issue was patched in version 3.33.2 and any future versions of Sourcegraph. We strongly encourage upgrading to secure versions. If you are unable to, you may disable Saved Searches and Code Monitors.
Vulnerability category: Information leak
Products affected by CVE-2021-43823
- cpe:2.3:a:sourcegraph:sourcegraph:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43823
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43823
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:N/A:N |
8.0
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
2.8
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2021-43823
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: security-advisories@github.com (Secondary)
-
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-43823
-
https://github.com/sourcegraph/sourcegraph/commit/a88d90a8302c492282186d39718cd8fb093c14fa
search: use exclude filters when resolving global private repos (#27501) · sourcegraph/sourcegraph@a88d90a · GitHubPatch;Third Party Advisory
-
https://github.com/sourcegraph/sourcegraph/security/advisories/GHSA-cpq7-hmvv-29w9
Side-channel attack in Sourcegraph · Advisory · sourcegraph/sourcegraph · GitHubThird Party Advisory
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