Is CVE-1999-1266 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-1999-1266 being exploited in the wild.

How severe is CVE-1999-1266?

Medium severity, with a CVSS score of 5, published 13 June 1997.

Is there a fix for CVE-1999-1266?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-1999-1266 attacked?

It is attacked over the network, in an operating system.

Am I affected by CVE-1999-1266?

Check whether you run Metamail Corporation Metamail or Rshd. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-1999-1266: rshd user enumeration via differential error messages

CVE-1999-1266 · Severity: medium · CVSS 5 · Published 1997-06-13

The remote shell daemon (rshd), a service used for executing commands on remote computers, contains a flaw in how it handles login errors. By observing the specific error messages returned during a connection attempt, an attacker can distinguish between valid and invalid usernames. This allows an attacker to build a list of real user accounts on the system, which can be used to facilitate more targeted password-guessing or social engineering attacks.

Technologies: Metamail Corporation Metamail. Vendors: Metamail Corporation.

Quick answers

Is CVE-1999-1266 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-1999-1266 being exploited in the wild.
How severe is CVE-1999-1266?: Medium severity, with a CVSS score of 5, published 13 June 1997.
Which products and versions are affected?: unknown rshd (rsh daemon).
Is there a fix for CVE-1999-1266?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-1999-1266 attacked?: It is attacked over the network, in an operating system.
Am I affected by CVE-1999-1266?: Check whether you run Metamail Corporation Metamail or Rshd. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The rsh daemon (rshd) is vulnerable to information disclosure via an observable response discrepancy (user enumeration). When a remote user attempts to connect, the daemon returns distinct error messages depending on whether the provided username exists on the local system. This is a network-based attack that requires no prior authentication. An attacker can automate requests to the service to brute-force or 'harvest' valid account names, significantly reducing the effort required for subsequent credential-based attacks. This behavior is inherent to older implementations of the rsh protocol.

Affected products

unknown rshd (rsh daemon)

Timeline

1997-06-13: disclosed

References

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