CVE-2021-32919

An issue was discovered in Prosody before 0.11.9. The undocumented dialback_without_dialback option in mod_dialback enables an experimental feature for server-to-server authentication. It does not correctly authenticate remote server certificates, allowing a remote server to impersonate another server (when this option is enabled).

An issue was discovered in Prosody before 0.11.9. The undocumented dialback_without_dialback option in mod_dialback enables an experimental feature for server-to-server authentication. It does not correctly authenticate remote server certificates, allowing a remote server to impersonate another server (when this option is enabled).

This update for prosody fixes the following issues:

prosody was updated to 0.11.9:

Security:

• mod_limits, prosody.cfg.lua: Enable rate limits by default
• certmanager: Disable renegotiation by default
• mod_proxy65: Restrict access to local c2s connections by default
• util.startup: Set more aggressive defaults for GC
• mod_c2s, mod_s2s, mod_component, mod_bosh, mod_websockets: Set default stanza size limits
• mod_authinternal{plain,hashed}: Use constant-time string comparison for secrets
• mod_dialback: Remove dialback-without-dialback feature
• mod_dialback: Use constant-time comparison with hmac

Minor changes:

• util.hashes: Add constant-time string comparison (binding to CRYPTO_memcmp)
• mod_c2s: Don’t throw errors in async code when connections are gone
• mod_c2s: Fix traceback in session close when conn is nil
• core.certmanager: Improve detection of LuaSec/OpenSSL capabilities
• mod_saslauth: Use a defined SASL error
• MUC: Add support for advertising muc#roomconfig_allowinvites in room disco#info
• mod_saslauth: Don’t throw errors in async code when connections are gone
• mod_pep: Advertise base pubsub feature (fixes #1632: mod_pep missing pubsub feature in disco)
• prosodyctl check config: Add ‘gc’ to list of global options
• prosodyctl about: Report libexpat version if known
• util.xmppstream: Add API to dynamically configure the stanza size limit for a stream
• util.set: Add is_set() to test if an object is a set
• mod_http: Skip IP resolution in non-proxied case
• mod_c2s: Log about missing conn on async state changes
• util.xmppstream: Reduce internal default xmppstream limit to 1MB

Relevant: https://prosody.im/security/advisory_20210512

• boo#1186027: Prosody XMPP server advisory 2021-05-12
• CVE-2021-32919
• CVE-2021-32917
• CVE-2021-32917
• CVE-2021-32920
• CVE-2021-32918

Update to 0.11.8:

Security:

• mod_saslauth: Disable ‘tls-unique’ channel binding with TLS 1.3 (#1542)

Fixes and improvements:

• net.websocket.frames: Improve websocket masking performance by using the new util.strbitop
• util.strbitop: Library for efficient bitwise operations on strings

Minor changes:

• MUC: Correctly advertise whether the subject can be changed (#1155)
• MUC: Preserve disco ‘node’ attribute (or lack thereof) in responses (#1595)
• MUC: Fix logic bug causing unnecessary presence to be sent (#1615)
• mod_bosh: Fix error if client tries to connect to component (#425)
• mod_bosh: Pick out the ‘wait’ before checking it instead of earlier
• mod_pep: Advertise base PubSub feature (#1632)
• mod_pubsub: Fix notification stanza type setting (#1605)
• mod_s2s: Prevent keepalives before client has established a stream
• net.adns: Fix bug that sent empty DNS packets (#1619)
• net.http.server: Don’t send Content-Length on 1xx/204 responses (#1596)
• net.websocket.frames: Fix length calculation bug (#1598)
• util.dbuffer: Make length API in line with Lua strings
• util.dbuffer: Optimize substring operations
• util.debug: Fix locals being reported under wrong stack frame in some cases
• util.dependencies: Fix check for Lua bitwise operations library (#1594)
• util.interpolation: Fix combination of filters and fallback values #1623
• util.promise: Preserve tracebacks
• util.stanza: Reject ASCII control characters (#1606)
• timers: Ensure timers can’t block other processing (#1620)

Update to 0.11.7:

Security:

• mod_websocket: Enforce size limits on received frames (fixes #1593)

Fixes and improvements:

• mod_c2s, mod_s2s: Make stanza size limits configurable
• Add configuration options to control Lua garbage collection parameters
• net.http: Backport SNI support for outgoing HTTP requests (#409)
• mod_websocket: Process all data in the buffer on close frame and connection errors (fixes #1474, #1234)
• util.indexedbheap: Fix heap data structure corruption, causing some timers to fail after a reschedule (fixes #1572)

Update to 0.11.6:

Fixes and improvements:

• mod_storage_internal: Fix error in time…

This update for prosody fixes the following issues:

prosody was updated to 0.11.9:

Security:

• mod_limits, prosody.cfg.lua: Enable rate limits by default
• certmanager: Disable renegotiation by default
• mod_proxy65: Restrict access to local c2s connections by default
• util.startup: Set more aggressive defaults for GC
• mod_c2s, mod_s2s, mod_component, mod_bosh, mod_websockets: Set default stanza size limits
• mod_authinternal{plain,hashed}: Use constant-time string comparison for secrets
• mod_dialback: Remove dialback-without-dialback feature
• mod_dialback: Use constant-time comparison with hmac

Minor changes:

• util.hashes: Add constant-time string comparison (binding to CRYPTO_memcmp)
• mod_c2s: Don’t throw errors in async code when connections are gone
• mod_c2s: Fix traceback in session close when conn is nil
• core.certmanager: Improve detection of LuaSec/OpenSSL capabilities
• mod_saslauth: Use a defined SASL error
• MUC: Add support for advertising muc#roomconfig_allowinvites in room disco#info
• mod_saslauth: Don’t throw errors in async code when connections are gone
• mod_pep: Advertise base pubsub feature (fixes #1632: mod_pep missing pubsub feature in disco)
• prosodyctl check config: Add ‘gc’ to list of global options
• prosodyctl about: Report libexpat version if known
• util.xmppstream: Add API to dynamically configure the stanza size limit for a stream
• util.set: Add is_set() to test if an object is a set
• mod_http: Skip IP resolution in non-proxied case
• mod_c2s: Log about missing conn on async state changes
• util.xmppstream: Reduce internal default xmppstream limit to 1MB

Relevant: https://prosody.im/security/advisory_20210512

• boo#1186027: Prosody XMPP server advisory 2021-05-12
• CVE-2021-32919
• CVE-2021-32917
• CVE-2021-32917
• CVE-2021-32920
• CVE-2021-32918

Update to 0.11.8:

Security:

• mod_saslauth: Disable ‘tls-unique’ channel binding with TLS 1.3 (#1542)

Fixes and improvements:

• net.websocket.frames: Improve websocket masking performance by using the new util.strbitop
• util.strbitop: Library for efficient bitwise operations on strings

Minor changes:

• MUC: Correctly advertise whether the subject can be changed (#1155)
• MUC: Preserve disco ‘node’ attribute (or lack thereof) in responses (#1595)
• MUC: Fix logic bug causing unnecessary presence to be sent (#1615)
• mod_bosh: Fix error if client tries to connect to component (#425)
• mod_bosh: Pick out the ‘wait’ before checking it instead of earlier
• mod_pep: Advertise base PubSub feature (#1632)
• mod_pubsub: Fix notification stanza type setting (#1605)
• mod_s2s: Prevent keepalives before client has established a stream
• net.adns: Fix bug that sent empty DNS packets (#1619)
• net.http.server: Don’t send Content-Length on 1xx/204 responses (#1596)
• net.websocket.frames: Fix length calculation bug (#1598)
• util.dbuffer: Make length API in line with Lua strings
• util.dbuffer: Optimize substring operations
• util.debug: Fix locals being reported under wrong stack frame in some cases
• util.dependencies: Fix check for Lua bitwise operations library (#1594)
• util.interpolation: Fix combination of filters and fallback values #1623
• util.promise: Preserve tracebacks
• util.stanza: Reject ASCII control characters (#1606)
• timers: Ensure timers can’t block other processing (#1620)

Update to 0.11.7:

Security:

• mod_websocket: Enforce size limits on received frames (fixes #1593)

Fixes and improvements:

• mod_c2s, mod_s2s: Make stanza size limits configurable
• Add configuration options to control Lua garbage collection parameters
• net.http: Backport SNI support for outgoing HTTP requests (#409)
• mod_websocket: Process all data in the buffer on close frame and connection errors (fixes #1474, #1234)
• util.indexedbheap: Fix heap data structure corruption, causing some timers to fail after a reschedule (fixes #1572)

Update to 0.11.6:

Fixes and improvements:

• mod_storage_internal: Fix error in time…

These are all security issues fixed in the prosody-0.11.10-1.2 package on the GA media of openSUSE Tumbleweed.