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When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all...
1 affected package
nss
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| nss | — | — | — | — | Fixed |
Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH...
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | — | — | — | Ignored | Ignored |
| openssh-ssh1 | — | — | — | Ignored | Ignored |
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to...
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | — | — | — | Not affected | Fixed |
| openssh-ssh1 | — | — | — | Not affected | Not affected |
nss before version 3.30 is vulnerable to a remote denial of service during the session handshake when using SessionTicket extension and ECDHE-ECDSA.
1 affected package
nss
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| nss | — | — | — | — | — |
Some fixes available 18 of 19
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in...
6 affected packages
libgcrypt11, libgcrypt20, nss, openssl, openssl098, openssl1.0
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| libgcrypt11 | — | — | — | — | Not in release |
| libgcrypt20 | — | — | — | — | Fixed |
| nss | — | — | — | — | Fixed |
| openssl | — | — | — | — | Fixed |
| openssl098 | — | — | — | — | Not in release |
| openssl1.0 | — | — | — | — | Fixed |
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key...
3 affected packages
openssl, openssl098, openssl1.0
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssl | — | — | — | — | Fixed |
| openssl098 | — | — | — | — | Not in release |
| openssl1.0 | — | — | — | — | Fixed |
The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to a cache timing side channel attack. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could recover...
3 affected packages
openssl, openssl098, openssl1.0
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssl | — | — | — | — | Fixed |
| openssl098 | — | — | — | — | Not in release |
| openssl1.0 | — | — | — | — | Fixed |
Because of an implementation bug the PA-RISC CRYPTO_memcmp function is effectively reduced to only comparing the least significant bit of each byte. This allows an attacker to forge messages that would be considered...
3 affected packages
openssl, openssl098, openssl1.0
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssl | — | — | — | — | — |
| openssl098 | — | — | — | — | — |
| openssl1.0 | — | — | — | — | — |
Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no...
3 affected packages
openssl, openssl098, openssl1.0
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssl | — | — | — | — | Fixed |
| openssl098 | — | — | — | — | Not in release |
| openssl1.0 | — | — | — | — | Fixed |
Authentication bypass vulnerability in mod_nss 1.0.8 allows remote attackers to assume the identity of a valid user by using their certificate and entering 'password' as the password.
1 affected package
libapache2-mod-nss
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| libapache2-mod-nss | Not in release | Not in release | Not in release | Not in release | Vulnerable |