QID 982748

QID 982748: Python (pip) Security Update for matrix-sydent (GHSA-wmg4-8cp2-hpg9)

Security update has been released for matrix-sydent to fix the vulnerability.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Sydent does not limit the size of requests it receives from HTTP clients. A malicious user could send an HTTP request with a very large body, leading to disk space exhaustion and denial of service.

Sydent also does not limit response size for requests it makes to remote Matrix homeservers. A malicious homeserver could return a very large response, again leading to memory exhaustion and denial of service.

This affects any server which accepts registration requests from untrusted clients.

CVSS V3 rated as High - 7.5 severity.

CVSS V2 rated as Medium - 5 severity.

Solution

Patched by 89071a1, 0523511, f56eee3.Workaround:
Request sizes can be limited in an HTTP reverse-proxy.

There are no known workarounds for the problem with overlarge responses.

Vendor References

GHSA-wmg4-8cp2-hpg9 - github.com/advisories/GHSA-wmg4-8cp2-hpg9

CVEs related to QID 982748

CVE-2021-29430 |

Software Advisories

Advisory ID	Software	Component	Link
GHSA-wmg4-8cp2-hpg9	matrix-sydent		github.com/advisories/GHSA-wmg4-8cp2-hpg9

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].