CVE-2001-0554

Home/CVE/Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows remote attackers to execute arbit

CVE

Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows remote attackers to execute arbit

Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows remote attackers to execute arbitrary commands via a set of options including AYT (Are You There), which is not properly handled by the telrcv function.

HIGH · CVSS 10 EPSS 0.16672

Act now

EPSS ≥ 0.10 - elevated exploitation probability
EPSS percentile: top 5% of all CVEs by exploitation likelihood
Public exploit or PoC is available
CVSS base score ≥ 7.0

Sigma rules8 YARA rules0

⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

▤

Affected Products & Versions

mit kerberosall versions
mit kerberos 5all versions
netkit linux netkitall versions
sgi irixall versions
freebsdall versions
ibm aixall versions
netbsdall versions

⚠

Public Exploits & PoCs

remoteSolaris 2.x/7.0/8 / IRIX 6.5.x / OpenBSD 2.x / NetBSD 1.x / Debian 3 / HP-UX 10 - 'TelnetD' Remote Buffer Overflowverified
pocwww.securityfocus.com · 197804www.securityfocus.com
pocwww.securityfocus.com · 3064www.securityfocus.com

◈

Detection Rules (IDS/IPS)

snort-communityPROTOCOL-TELNET bsd telnet exploit responseattempted-admin

snort-communityPROTOCOL-TELNET bsd exploit client finishingsuccessful-admin

Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.

◈

Sigma Hunt Rules

Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.

producthighSuspicious DNS Query Indicating Kerberos Coercion via DNS Object SPN Spoofing - Network

producthighSuspicious Kerberos Ticket Request via PowerShell Script - ScriptBlock

producthighSuspicious DNS Query Indicating Kerberos Coercion via DNS Object SPN Spoofing

producthighAttempts of Kerberos Coercion Via DNS SPN Spoofing

producthighSuspicious Kerberos Ticket Request via CLI

producthighPotential Kerberos Coercion by Spoofing SPNs via DNS Manipulation

Show all 8 top matches

producthighPetitPotam Suspicious Kerberos TGT Request

producthighKerberos Manipulation

▣

Scoring & Timeline

HIGH · CVSS v2 (legacy) · cve@mitre.org

View on NVD

This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.

v2 Vector

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

Published to NVD14 Aug 2001 · 04:00 AM

⚑

Vendor Advisories

rhsaRHSA-2001:099Critical

rhsaRHSA-2001:100Critical

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:49.telnetd.ascBroken LinkPatchVendor Advisory

ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2001-012.txt.ascBroken Link

ftp://patches.sgi.com/support/free/security/advisories/20010801-01-PBroken Link

ftp://stage.caldera.com/pub/security/openserver/CSSA-2001-SCO.10/CSSA-2001-SCO.10.txtBroken Link

http://archives.neohapsis.com/archives/hp/2001-q4/0014.htmlBroken Link

http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000413Broken Link

Show all 23 references

http://ftp.support.compaq.com/patches/.new/html/SSRT0745U.shtmlBroken Link

http://online.securityfocus.com/advisories/3476Broken LinkThird Party AdvisoryVDB Entry

http://online.securityfocus.com/archive/1/199496Broken LinkThird Party AdvisoryVDB Entry

http://online.securityfocus.com/archive/1/199541Broken LinkThird Party AdvisoryVDB Entry

http://online.securityfocus.com/archive/1/203000Broken LinkThird Party AdvisoryVDB Entry

http://www.calderasystems.com/support/security/advisories/CSSA-2001-030.0.txtBroken Link

http://www.cert.org/advisories/CA-2001-21.htmlPatchThird Party AdvisoryUS Government Resource

http://www.ciac.org/ciac/bulletins/l-131.shtmlBroken Link

http://www.cisco.com/warp/public/707/catos-telrcv-vuln-pub.shtmlThird Party Advisory

http://www.debian.org/security/2001/dsa-070Third Party Advisory

http://www.debian.org/security/2001/dsa-075Third Party Advisory

http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-068.php3Broken Link

http://www.novell.com/linux/security/advisories/2001_029_nkitb_txt.htmlBroken Link

http://www.osvdb.org/809Broken Link

http://www.redhat.com/support/errata/RHSA-2001-099.htmlThird Party Advisory

http://www.redhat.com/support/errata/RHSA-2001-100.htmlThird Party Advisory

https://exchange.xforce.ibmcloud.com/vulnerabilities/6875Third Party AdvisoryVDB Entry

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