Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.

Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where the vulnerable homeserver is in the room and untrusted users are permitted to create groups (communities). By default, only homeserver administrators can create groups. However, homeserver administrators can already access this information in the database or using the admin API. As a result, only homeservers where the configuration setting `enable_group_creation` has been set to `true` are impacted. Server administrators should upgrade to 1.41.1 or higher to patch the vulnerability. There are two potential workarounds. Server administrators can set `enable_group_creation` to `false` in their homeserver configuration (this is the default value) to prevent creation of groups by non-administrators. Administrators that are using a reverse proxy could, with partial loss of group functionality, block the endpoints `/_matrix/client/r0/groups/{group_id}/rooms` and `/_matrix/client/unstable/groups/{group_id}/rooms`.

IBM Guardium Data Encryption (GDE) 4.0.0.7 and lower stores sensitive information in URL parameters. This may lead to information disclosure if unauthorized parties have access to the URLs via server logs, referrer header or browser history. IBM X-Force ID: 213855.

IBM Cloud Pak for Security (CP4S) 1.7.2.0, 1.7.1.0, and 1.7.0.0 could allow an authenticated user to obtain sensitive information in HTTP responses that could be used in further attacks against the system. IBM X-Force ID: 213651.

IBM QRadar WinCollect Agent information disclosure

IBM QRadar WinCollect Agent 10.0 through 10.1.7 could allow a privileged user to obtain sensitive information due to missing best practices. IBM X-Force ID: 213551.

IBM MQ Appliance 9.2 CD and 9.2 LTS could allow a local attacker to obtain sensitive information by inclusion of sensitive data within diagnostics. IBM X-Force ID: 213215.

IBM MQ Appliance could allow a local attacker to obtain sensitive information by inclusion of sensitive data within trace.

IBM OPENBMC OP920, OP930, and OP940 could allow an unauthenticated user to obtain sensitive information. IBM X-Force ID: 212047.

IBM Security Verify 10.0.0, 10.0.1.0, and 10.0.2.0 could disclose sensitive version information in HTTP response headers that could aid in further attacks against the system. IBM X-Force ID: 212038

IBM Spectrum Protect Operations Center 7.1, under special configurations, could allow a local user to obtain highly sensitive information. IBM X-Force ID: 209610.

IBM Security Verify Privilege information disclosure

IBM Security Verify Privilege On-Premises 11.5 could allow a user to obtain version number information using a specially crafted HTTP request that could be used in further attacks against the system. IBM X-Force ID: 207899.

vault: UI erroneously cached and exposed user-viewed secrets between sessions in a single shared browser

HashiCorp Vault and Vault Enterprise’s UI erroneously cached and exposed user-viewed secrets between sessions in a single shared browser. Fixed in 1.8.0 and pending 1.7.4 / 1.6.6 releases.

kmail: STARTTLS is ignored when "Server requires authentication" not checked in UI

In KDE KMail 19.12.3 (aka 5.13.3), the SMTP STARTTLS option is not honored (and cleartext messages are sent) unless "Server requires authentication" is checked.

kernel: net/netfilter/nf_conntrack_standalone.c allows observation of changes in any net namespace because these changes are leaked into all other net namespaces

net/netfilter/nf_conntrack_standalone.c in the Linux kernel before 5.12.2 allows observation of changes in any net namespace because these changes are leaked into all other net namespaces. This is related to the NF_SYSCTL_CT_MAX, NF_SYSCTL_CT_EXPECT_MAX, and NF_SYSCTL_CT_BUCKETS sysctls.

kernel: drivers/net/ethernet/xilinx/xilinx_emaclite.c prints the real IOMEM pointer

drivers/net/ethernet/xilinx/xilinx_emaclite.c in the Linux kernel before 5.13.3 makes it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer).

kibana: HTTP server information disclosure via JIRA and IBM Resilient connectors

It was discovered that Kibana’s JIRA connector & IBM Resilient connector could be used to return HTTP response data on internal hosts, which may be intentionally hidden from public view. Using this vulnerability, a malicious user with the ability to create connectors, could utilize these connectors to view limited HTTP response data on hosts accessible to the cluster.

An information disclosure vulnerability in the login page of Huntflow Enterprise before 3.10.4 could allow an unauthenticated, remote user to get information about the domain name of the configured LDAP server. An attacker could exploit this vulnerability by requesting the login page and searching for the "isLdap" JavaScript parameter in the HTML source code.

Exposed phpinfo() in PhpFastCache

PhpFastCache is a high-performance backend cache system (packagist package phpfastcache/phpfastcache). In versions before 6.1.5, 7.1.2, and 8.0.7 the `phpinfo()` can be exposed if the `/vendor` is not protected from public access. This is a rare situation today since the vendor directory is often located outside the web directory or protected via server rule (.htaccess, etc). Only the v6, v7 and v8 will be patched respectively in 8.0.7, 7.1.2, 6.1.5. Older versions such as v5, v4 are not longer supported and will **NOT** be patched. As a workaround, protect the `/vendor` directory from public access.

Information exposure in Discourse

Discourse is an open-source platform for community discussion. In Discourse before versions 2.7.8 and 2.8.0.beta5, a user's read state for a topic such as the last read post number and the notification level is exposed.

Lack of ratelimit on Richdocuments OCS endpoint in nextcloud

Nextcloud Richdocuments is an open source collaborative office suite. In affected versions there is a lack of rate limiting on the Richdocuments OCS endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. It is recommended that the Nextcloud Richdocuments app is upgraded to either 3.8.4 or 4.2.1 to resolve. For users unable to upgrade it is recommended that the Richdocuments application be disabled.

NetSarang Xshell 7 before Build 0077 includes unintended code strings in paste operations.