Authentication Bypass

curl is vulnerable to Authentication Bypass. The vulnerability exists because the SSH connection is too eager to reuse still since it keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup...

CURL-CVE-2023-27535 FTP too eager connection reuse

libcurl would reuse a previously created FTP connection even when one or more options had been changed that could have made the effective user a different one, thus leading to doing the second transfer with the wrong credentials. libcurl keeps previously used connections in a connection pool for...

GSS delegation too eager connection reuse

libcurl would reuse a previously created connection even when the GSS delegation CURLOPTGSSAPIDELEGATION option had been changed that could have changed the user's permissions in a second transfer. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if...

SSH connection too eager reuse still

libcurl would reuse a previously created connection even when an SSH related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, two SSH settings were...

FTP too eager connection reuse

libcurl would reuse a previously created FTP connection even when one or more options had been changed that could have made the effective user a different one, thus leading to doing the second transfer with the wrong credentials. libcurl keeps previously used connections in a connection pool for...

CURL-CVE-2023-27536 GSS delegation too eager connection reuse

libcurl would reuse a previously created connection even when the GSS delegation CURLOPTGSSAPIDELEGATION option had been changed that could have changed the user's permissions in a second transfer. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if...

CURL-CVE-2023-27538 SSH connection too eager reuse still

libcurl would reuse a previously created connection even when an SSH related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, two SSH settings were...

Internet Bug Bounty: CVE-2023-27538: SSH connection too eager reuse still

A vulnerability was found in libcurl that allowed the reuse of a previously created SSH connection even when an SSH related option had been changed that should have prohibited reuse. This was due to two SSH settings being left out from the configuration match checks, making them match too easily...

Internet Bug Bounty: CVE-2023-27536: GSS delegation too eager connection re-use

A vulnerability was found in libcurl versions 7.22.0 to 7.88.1 that allowed for the reuse of a previously created connection even when the GSS delegation option had been changed, potentially changing the user's permissions in a second transfer. This could affect krb5/kerberos/negotiate/GSSAPI...

Internet Bug Bounty: CVE-2023-27535: FTP too eager connection reuse

A vulnerability was found in libcurl versions 7.13.0 to 7.88.1 that allowed the reuse of previously created FTP connections even when one or more options had been changed, leading to the second transfer being done with wrong credentials. This was due to several FTP settings being left out from th...

CVE-2023-27535

An authentication bypass vulnerability exists in libcurl 8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain...

UBUNTU-CVE-2023-27536

An authentication bypass vulnerability exists libcurl 8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPTGSSAPIDELEGATION option. This vulnerability affects...

Slackware Linux 14.0 / 14.1 / 14.2 / 15.0 / current curl Multiple Vulnerabilities (SSA:2023-079-01)

The version of curl installed on the remote host is prior to 8.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2023-079-01 advisory. - A vulnerability in input validation exists in curl 8.0 during communication using the TELNET protocol may allow an attacker t...

UBUNTU-CVE-2023-27535

An authentication bypass vulnerability exists in libcurl 8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain...

UBUNTU-CVE-2023-27538

An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequen...

curl -- multiple vulnerabilities

Harry Sintonen reports: CVE-2023-27533 curl supports communicating using the TELNET protocol and as a part of this it offers users to pass on user name and "telnet options" for the server negotiation. Due to lack of proper input scrubbing and without it being the documented functionality, curl...

CVE-2023-27538

An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequen...

Design/Logic Flaw

Discourse is an open-source discussion platform. Prior to version 3.0.2 of the stable branch and version 3.1.0.beta3 of the beta and tests-passed branches, a user logged as an administrator can request backups multiple times, which will eat up all the connections to the DB. If this is done on a...

OESA-2023-1177 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In bindertransactionbufferrelease of binder.c, there is a possible use after free due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction...

OESA-2023-1178 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In bindertransactionbufferrelease of binder.c, there is a possible use after free due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction...