CVE-2019-3558 — Python Facebook Thrift servers would not error upon receiving messages with cont
Python Facebook Thrift servers would not error upon receiving messages with containers of fields of unknown type. As a result, malicious clients could send short messages which would take a long time for the server to parse, potentially leading to denial of service. This issue af
Published
2019-05-06T15:15:02.000Z
Last modified
2024-08-04T19:12:09.557Z
01What is this vulnerability?
Python Facebook Thrift servers would not error upon receiving messages with containers of fields of unknown type. As a result, malicious clients could send short messages which would take a long time for the server to parse, potentially leading to denial of service. This issue affects Facebook Thrift prior to v2019.02.18.00.
02Affected products
| Vendor | Product | Versions |
|---|
| Facebook | Facebook Thrift | v2019.02.18.00, unspecified |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2019-05-06T15:15:02.000Z
- Last modified: 2024-08-04T19:12:09.557Z
09References
- github.com — https://github.com/facebook/fbthrift/commit/c5d6e07588cd03061bc54d451a7fa6e84883…
- www.facebook.com — https://www.facebook.com/security/advisories/cve-2019-3558
- www.securityfocus.com — http://www.securityfocus.com/bid/108274
- lists.apache.org — https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995…
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