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    CVE-2001-0554

    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.

    Published:Jul 18, 2001
    Last Modified:Apr 16, 2026
    EPS:Mar 9, 2002
    EPSS Score:0.16672
    CVSS Score:10

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Freebsd
    Product
    Freebsd
    Vendor
    Ibm
    Product
    Aix
    Vendor
    Mit
    Product
    Kerberos
    Vendor
    Mit
    Product
    Kerberos 5
    Vendor
    Netbsd
    Product
    Netbsd
    Vendor
    Netkit
    Product
    Linux Netkit
    Vendor
    Openbsd
    Product
    Openbsd
    Vendor
    Redhat
    Product
    Linux
    Vendor
    Sgi
    Product
    Irix
    Vendor
    Sun
    Product
    Solaris
    Vendor
    Sun
    Product
    Sunos

    Exploits

    http://www.securityfocus.com/archive/1/197804http://www.securityfocus.com/bid/3064http://www.securityfocus.com/archive/1/197804http://www.securityfocus.com/bid/3064https://www.exploit-db.com/exploits/21018

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    References

    ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:49.telnetd.asc
    ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2001-012.txt.asc
    ftp://patches.sgi.com/support/free/security/advisories/20010801-01-P
    ftp://stage.caldera.com/pub/security/openserver/CSSA-2001-SCO.10/CSSA-2001-SCO.10.txt
    http://archives.neohapsis.com/archives/hp/2001-q4/0014.html
    http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000413
    http://ftp.support.compaq.com/patches/.new/html/SSRT0745U.shtml
    http://online.securityfocus.com/advisories/3476
    http://online.securityfocus.com/archive/1/199496
    http://online.securityfocus.com/archive/1/199541
    http://online.securityfocus.com/archive/1/203000
    http://www.calderasystems.com/support/security/advisories/CSSA-2001-030.0.txt
    http://www.cert.org/advisories/CA-2001-21.html
    http://www.ciac.org/ciac/bulletins/l-131.shtml
    http://www.cisco.com/warp/public/707/catos-telrcv-vuln-pub.shtml
    http://www.debian.org/security/2001/dsa-070
    http://www.debian.org/security/2001/dsa-075
    http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-068.php3
    http://www.novell.com/linux/security/advisories/2001_029_nkitb_txt.html
    http://www.osvdb.org/809
    http://www.redhat.com/support/errata/RHSA-2001-099.html
    http://www.redhat.com/support/errata/RHSA-2001-100.html
    http://www.securityfocus.com/archive/1/197804
    http://www.securityfocus.com/bid/3064
    https://exchange.xforce.ibmcloud.com/vulnerabilities/6875
    ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:49.telnetd.asc
    ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2001-012.txt.asc
    ftp://patches.sgi.com/support/free/security/advisories/20010801-01-P
    ftp://stage.caldera.com/pub/security/openserver/CSSA-2001-SCO.10/CSSA-2001-SCO.10.txt
    http://archives.neohapsis.com/archives/hp/2001-q4/0014.html
    http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000413
    http://ftp.support.compaq.com/patches/.new/html/SSRT0745U.shtml
    http://online.securityfocus.com/advisories/3476
    http://online.securityfocus.com/archive/1/199496
    http://online.securityfocus.com/archive/1/199541
    http://online.securityfocus.com/archive/1/203000
    http://www.calderasystems.com/support/security/advisories/CSSA-2001-030.0.txt
    http://www.cert.org/advisories/CA-2001-21.html
    http://www.ciac.org/ciac/bulletins/l-131.shtml
    http://www.cisco.com/warp/public/707/catos-telrcv-vuln-pub.shtml
    http://www.debian.org/security/2001/dsa-070
    http://www.debian.org/security/2001/dsa-075
    http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-068.php3
    http://www.novell.com/linux/security/advisories/2001_029_nkitb_txt.html
    http://www.osvdb.org/809
    http://www.redhat.com/support/errata/RHSA-2001-099.html
    http://www.redhat.com/support/errata/RHSA-2001-100.html
    http://www.securityfocus.com/archive/1/197804
    http://www.securityfocus.com/bid/3064
    https://exchange.xforce.ibmcloud.com/vulnerabilities/6875

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High