Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

CVEs (751)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
CVE-2003-0637 1Novell 1Ichain Apr 16, 2026 Aug 27, 2003 N/A· v4 N/A· v3 5.0 MEDIUM· v2 Novell iChain 2.2 before Support Pack 1 uses a shorter timeout for a non-existent user than a valid user, which makes it easier for remote attackers to guess usernames and conduct brute force password guessing.
CVE-2003-0190 3Openbsd OpenpkgSiemens 4Openpkg OpensshScalance X204rna Ecc Firmware+1 more Apr 16, 2026 May 12, 2003 N/A· v4 N/A· v3 5.0 MEDIUM· v2 OpenSSH-portable (OpenSSH) 3.6.1p1 and earlier with PAM support enabled immediately sends an error message when a user does not exist, which allows remote attackers to determine valid usernames via a timing attack.
CVE-2003-0078 3Freebsd OpenbsdOpenssl 3Freebsd OpenbsdOpenssl Apr 16, 2026 Mar 3, 2003 N/A· v4 N/A· v3 5.0 MEDIUM· v2 ssl3_get_record in s3_pkt.c for OpenSSL before 0.9.7a and 0.9.6 before 0.9.6i does not perform a MAC computation if an incorrect block cipher padding is used, which causes an information leak (timing discrepancy) that ma...Show more ssl3_get_record in s3_pkt.c for OpenSSL before 0.9.7a and 0.9.6 before 0.9.6i does not perform a MAC computation if an incorrect block cipher padding is used, which causes an information leak (timing discrepancy) that may make it easier to launch cryptographic attacks that rely on distinguishing between padding and MAC verification errors, possibly leading to extraction of the original plaintext, aka the "Vaudenay timing attack."Show less
CVE-2002-2094 1Joetesta 1Hellbent Apr 16, 2026 Dec 31, 2002 N/A· v4 N/A· v3 5.0 MEDIUM· v2 Joe Testa hellbent 01 allows remote attackers to determine the full path of the web root directory via a GET request with a relative path that includes the root's parent, which generates a 403 error message if the parent...Show more Joe Testa hellbent 01 allows remote attackers to determine the full path of the web root directory via a GET request with a relative path that includes the root's parent, which generates a 403 error message if the parent is incorrect, but a normal response if the parent is correct.Show less
CVE-2002-0515 1Phildev 1Ipfilter Apr 16, 2026 Aug 12, 2002 N/A· v4 N/A· v3 5.0 MEDIUM· v2 IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs.
CVE-2002-0514 1Openbsd 1Openbsd Apr 16, 2026 Aug 12, 2002 N/A· v4 N/A· v3 5.0 MEDIUM· v2 PF in OpenBSD 3.0 with the return-rst rule sets the TTL to 128 in the RST packet, which allows remote attackers to determine if a port is being filtered because the TTL is different than the default TTL.
CVE-2002-0208 1Network.associates 1Pgpfire Apr 16, 2026 May 16, 2002 N/A· v4 N/A· v3 5.0 MEDIUM· v2 PGP Security PGPfire 7.1 for Windows alters the system's TCP/IP stack and modifies packets in ICMP error messages in a way that allows remote attackers to determine that the system is running PGPfire.
CVE-2001-1528 1Amtote 1Homebet Apr 16, 2026 Dec 31, 2001 N/A· v4 N/A· v3 5.0 MEDIUM· v2 AmTote International homebet program returns different error messages when invalid account numbers and PIN codes are provided, which allows remote attackers to determine the existence of valid account numbers via a brute...Show more AmTote International homebet program returns different error messages when invalid account numbers and PIN codes are provided, which allows remote attackers to determine the existence of valid account numbers via a brute force attack.Show less
CVE-2001-1483 1Nrl.navy 1One Time Passwords In Everything Apr 16, 2026 Dec 31, 2001 N/A· v4 N/A· v3 5.0 MEDIUM· v2 One-Time Passwords In Everything (a.k.a OPIE) 2.32 and 2.4 allows remote attackers to determine the existence of user accounts by printing random passphrases if the user account does not exist and static passphrases if t...Show more One-Time Passwords In Everything (a.k.a OPIE) 2.32 and 2.4 allows remote attackers to determine the existence of user accounts by printing random passphrases if the user account does not exist and static passphrases if the user account does exist.Show less
CVE-2001-1387 1Netfilter 1Iptables Apr 16, 2026 Nov 5, 2001 N/A· v4 N/A· v3 2.1 LOW· v2 iptables-save in iptables before 1.2.4 records the "--reject-with icmp-host-prohibited" rule as "--reject-with tcp-reset," which causes iptables to generate different responses than specified by the administrator, possib...Show more iptables-save in iptables before 1.2.4 records the "--reject-with icmp-host-prohibited" rule as "--reject-with tcp-reset," which causes iptables to generate different responses than specified by the administrator, possibly leading to an information leak.Show less
CVE-2000-1117 1Ibm 1Lotus Notes Apr 16, 2026 Jan 9, 2001 N/A· v4 N/A· v3 5.0 MEDIUM· v2 The Extended Control List (ECL) feature of the Java Virtual Machine (JVM) in Lotus Notes Client R5 allows malicious web site operators to determine the existence of files on the client by measuring delays in the executio...Show more The Extended Control List (ECL) feature of the Java Virtual Machine (JVM) in Lotus Notes Client R5 allows malicious web site operators to determine the existence of files on the client by measuring delays in the execution of the getSystemResource method.Show less

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