CWE-203: Observable Discrepancy, page 17

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

What the weakness is: CWE-203 at MITRE

1. 5.3CVE-2016-9129EPSS 1.4%2017-03-28

   Revive Adserver before 3.2.3 suffers from Information Exposure Through Discrepancy. It is possible to check whether or not an email address was associated to one or more user accounts on a target Revive Adserver instance by examining the m…

2. 5.5CVE-2016-2178EPSS 1.2%2016-06-20

   The dsa_sign_setup function in crypto/dsa/dsa_ossl.c in OpenSSL through 1.0.2h does not properly ensure the use of constant-time operations, which makes it easier for local users to discover a DSA private key via a timing side-channel atta…

3. –CVE-2013-1620EPSS 3.7%2013-02-08

   The TLS implementation in Mozilla Network Security Services (NSS) does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows remote attackers to…

4. –CVE-2005-1650EPSS 1.7%2005-05-18

   The web mail service in Woppoware PostMaster 4.2.2 (build 3.2.5) generates different error messages depending on whether a user exists or not, which allows remote attackers to determine valid usernames.

5. –CVE-2005-0918EPSS 2.4%2005-05-05

   The NPSVG3.dll ActiveX control for Adobe SVG Viewer 3.02 and earlier, when running on Internet Explorer, allows remote attackers to determine the existence of arbitrary files by setting the src property to the target filename and using Jav…

6. –CVE-2004-2252EPSS 4.2%2004-12-31

   The firewall in Astaro Security Linux before 4.024 sends responses to SYN-FIN packets, which makes it easier for remote attackers to obtain information about the system and construct specialized attacks.

7. –CVE-2004-2150EPSS 2.4%2004-12-31

   Nettica Corporation INTELLIPEER Email Server 1.01 displays different error messages for valid and invalid account names, which allows remote attackers to determine valid account names.

8. –CVE-2004-1428EPSS 2.8%2004-12-31

   ArGoSoft FTP before 1.4.2.1 generates an error message if the user name does not exist instead of prompting for a password, which allows remote attackers to determine valid usernames.

9. –CVE-2004-0294EPSS 2.7%2004-11-23

   YaBB 1 SP 1.3.1 displays different error messages when a user exists or not, which makes it easier for remote attackers to identify valid users and conduct a brute force password guessing attack.

10. –CVE-2004-0243EPSS 1.7%2004-11-23

    AIX 4.3.3 through AIX 5.1, when direct remote login is disabled, displays a different message if the password is correct, which allows remote attackers to guess the password via brute force methods.

11. –CVE-2004-0778EPSS 2.4%2004-10-20

    CVS 1.11.x before 1.11.17, and 1.12.x before 1.12.9, allows remote attackers to determine the existence of arbitrary files and directories via the -X command for an alternate history file, which causes different error messages to be return…

12. –CVE-2004-1602ExploitEPSS 31%2004-10-15

    ProFTPD 1.2.x, including 1.2.8 and 1.2.10, responds in a different amount of time when a given username exists, which allows remote attackers to identify valid usernames by timing the server response.

13. –CVE-2003-0637EPSS 1.5%2003-08-27

    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.

14. –CVE-2003-0190ExploitEPSS 77%2003-05-12

    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.

15. –CVE-2003-0078ExploitEPSS 14%2003-03-03

    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…

16. –CVE-2002-2094EPSS 2.7%2002-12-31

    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 …

17. –CVE-2002-0515EPSS 2.2%2002-08-12

    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.

18. –CVE-2002-0514EPSS 2.0%2002-08-12

    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.

19. –CVE-2002-0208EPSS 2.0%2002-05-16

    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.

20. –CVE-2001-1528ExploitEPSS 7.9%2001-12-31

    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.

21. –CVE-2001-1483EPSS 3.6%2001-12-31

    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 doe…

22. –CVE-2001-1387EPSS 0.4%2001-11-05

    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 in…

23. –CVE-2000-1117EPSS 2.9%2001-01-09

    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 getSystemR…