RHEL 2.1 : vnc (RHSA-2002:287)

Updated VNC packages are available to fix a challenge replay attack that is present in the VNC server. VNC is a tool for providing a remote graphical user interface. The VNC DES authentication scheme is implemented using a challenge-response architecture, producing a random and different challeng...

RHEL 2.1 : openssh (RHSA-2003:224)

Updated OpenSSH packages are now available. These updates close an information leak caused by sshd's interaction with the PAM system. OpenSSH is a suite of network connectivity tools that can be used to establish encrypted connections between systems on a network and can provide interactive login...

PT-2004-1354 · Washington University · Wu-Ftpd

Name of the Vulnerable Software and Affected Versions: wu-ftpd version 2.6.2 Description: The issue is related to a buffer overflow in the skey challenge function, which can be triggered by a remote attacker sending a s/key request with a long name. This could lead to a denial of service and...

CVE-2003-1433

Epic Games Unreal Engine 226f through 436 does not validate the challenge key, which allows remote attackers to exhaust the player limit by joining the game multiple times...

Multiple IKE bugs

Type of cerificate is not checked. If XAUTH if used in IKE phase I, it's possible to user proxy attack for challenge-response based authentication...

DEBIAN-CVE-2003-0786

The SSH1 PAM challenge response authentication in OpenSSH 3.7.1 and 3.7.1p1, when Privilege Separation is disabled, does not check the result of the authentication attempt, which can allow remote attackers to gain privileges...

PT-2003-1877 · Openssh +1 · Openssh +1

Name of the Vulnerable Software and Affected Versions: OpenSSH versions 3.7.1 through 3.7.1p1 Description: The issue concerns the SSH1 PAM challenge response authentication mechanism in OpenSSH. When Privilege Separation is disabled, the authentication attempt result is not properly checked,...

CVE-2002-0639

CVE-2002-0639 concerns an integer overflow in sshd of OpenSSH 2.9.9–3.3 that enables remote code execution during ChallengeResponseAuthentication when SKEY or BSD_AUTH are used. The connected data confirms the CVE exists and notes a related entry, CVE-2002-0390, was reserved as a duplicate of CVE...

CVE-2002-0639

Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication ChallengeResponseAuthentication when OpenSSH is using SKEY or BSDAUTH authentication...

Moderate: Red Hat Security Advisory: vnc security update

Updated VNC packages are available to fix a challenge replay attack that is present in the VNC server. VNC is a tool for providing a remote graphical user interface. The VNC DES authentication scheme is implemented using a challenge-response architecture, producing a random and different challeng...

Buffer overflow in OpenSSH Challenge-response

Integer overflow during challenge-response processing. Buffer overflow on large number of responses...

CVE-2002-2227

Buffer underflow in ssldump 0.9b2 and earlier allows remote attackers to cause a denial of service memory corruption via a crafted SSLv2 challenge value...

DEBIAN-CVE-2002-1336

TightVNC before 1.2.6 generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users...

CVE-2002-1336

TightVNC before 1.2.6 generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users...

CVE-2002-1336

TightVNC before 1.2.6 generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users...

CVE-2002-1017

Adobe eBook Reader 2.1 and 2.2 allows a user to copy eBooks to other systems by using the backup feature, capturing the encryption Challenge, and using the appropriate hash function to generate the activation code...

VNC authentication weakness

VNC authentication weakness --------------------------- VNC uses a DES-encrypted challenge-response system to avoid passing passwords over the wire in plaintext. However, it seems that a weakness in the way the challenge is generated by some servers would make this useless. The following program...

Weak encryption in VNC

Duplicated challenges are generated during challenge-response authentication...

Arbitrary Code Execution

Overview Affected versions of this package are vulnerable to Arbitrary Code Execution. Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication ChallengeResponseAuthentication when OpenSSH is using SKEY or...

DEBIAN-CVE-2002-0639

Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication ChallengeResponseAuthentication when OpenSSH is using SKEY or BSDAUTH authentication...