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CVE-2011-4862

Public exploit available. Not confirmed exploited in the wild yet. Fixed in 1.9.

CVSS 2.010.0CriticalEPSS percentile99th95% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
Public exploit: 1 sourceFix1.9Upgrade to this build
Check it yourself

OpenVAS · 28 checks

e.g. OID 1.3.6.1.4.1.25623.1.0.103373

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Published Updated Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Gnu InetutilsAffected: < 1.9Upgrade to: 1.9Stated by: NVD
  • Heimdal Project HeimdalAffected: ≤ 1.5.1Upgrade to: after 1.5.1Stated by: NVD
  • Mit Krb5-applAffected: ≤ 1.0.2Upgrade to: after 1.0.2Stated by: NVD
  • FreebsdAffected: ≥ 7.3, ≤ 9.0Upgrade to: after 9.0Stated by: NVD
  • Novell Inc. SUSE Linux EnterpriseAffected: Server 10 SP4Upgrade to: not statedStated by: BDU

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2 and earlier, Heimdal 1.5.1 and earlier, GNU inetutils, and possibly other products allows remote attackers to execute arbitrary code via a long encryption key, as exploited in the wild in December 2011.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS99th
Public exploit
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

1 source with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

95% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

A public exploit existed 53 days before the patch.

  1. OpenVAS check added
  2. Patch availableworkaround available, record updated
  3. Public exploit / PoCsource: exploit-db
  4. Publishedweakness classified, att&ck mapped

Affected products

And 3 more affected products. See all after sign-in

Technical detail

CVSS 2.0 vector

Open in the CVSS calculator

AV:N/AC:L/Au:N/C:C/I:C/A:C

Scored 10.0 by NVD.

How it is reached

  • Access Vector NetworkExploitable remotely over the network
  • Access Complexity LowNo special conditions required
  • Authentication NoneNo authentication required

Impact if exploited

  • Confidentiality CompleteAll information is disclosed
  • Integrity CompleteAll data can be modified
  • Availability CompleteTotal shutdown of the affected resource

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 40 more references. See all after sign-in

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