matrix-synapse-1.43.0-1.1 on GA media SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2024:11041-1 Final 1 1 2024-06-15T00:00:00Z current 2024-06-15T00:00:00Z 2024-06-15T00:00:00Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z matrix-synapse-1.43.0-1.1 on GA media These are all security issues fixed in the matrix-synapse-1.43.0-1.1 package on the GA media of openSUSE Tumbleweed. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). openSUSE-Tumbleweed-2024-11041 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/security/rating/ SUSE Security Ratings https://www.suse.com/security/cve/CVE-2018-12291/ SUSE CVE CVE-2018-12291 page https://www.suse.com/security/cve/CVE-2019-5885/ SUSE CVE CVE-2019-5885 page https://www.suse.com/security/cve/CVE-2020-10108/ SUSE CVE CVE-2020-10108 page https://www.suse.com/security/cve/CVE-2020-10109/ SUSE CVE CVE-2020-10109 page https://www.suse.com/security/cve/CVE-2020-1971/ SUSE CVE CVE-2020-1971 page https://www.suse.com/security/cve/CVE-2020-26257/ SUSE CVE CVE-2020-26257 page https://www.suse.com/security/cve/CVE-2020-26891/ SUSE CVE CVE-2020-26891 page https://www.suse.com/security/cve/CVE-2021-29471/ SUSE CVE CVE-2021-29471 page https://www.suse.com/security/cve/CVE-2021-3449/ SUSE CVE CVE-2021-3449 page https://www.suse.com/security/cve/CVE-2021-39163/ SUSE CVE CVE-2021-39163 page https://www.suse.com/security/cve/CVE-2021-39164/ SUSE CVE CVE-2021-39164 page openSUSE Tumbleweed matrix-synapse-1.43.0-1.1 matrix-synapse-1.43.0-1.1 as a component of openSUSE Tumbleweed The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the get_missing_events federation API where event visibility rules were not applied correctly. CVE-2018-12291 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 moderate 5 AV:N/AC:L/Au:N/C:P/I:N/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2018-12291.html CVE-2018-12291 https://bugzilla.suse.com/1096833 SUSE Bug 1096833 Matrix Synapse before 0.34.0.1, when the macaroon_secret_key authentication parameter is not set, uses a predictable value to derive a secret key and other secrets which could allow remote attackers to impersonate users. CVE-2019-5885 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 moderate 5 AV:N/AC:L/Au:N/C:N/I:P/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2019-5885.html CVE-2019-5885 https://bugzilla.suse.com/1121886 SUSE Bug 1121886 In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. When presented with two content-length headers, it ignored the first header. When the second content-length value was set to zero, the request body was interpreted as a pipelined request. CVE-2020-10108 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 important 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2020-10108.html CVE-2020-10108 https://bugzilla.suse.com/1166457 SUSE Bug 1166457 In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. When presented with a content-length and a chunked encoding header, the content-length took precedence and the remainder of the request body was interpreted as a pipelined request. CVE-2020-10109 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 important 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2020-10109.html CVE-2020-10109 https://bugzilla.suse.com/1166458 SUSE Bug 1166458 The X.509 GeneralName type is a generic type for representing different types of names. One of those name types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a possible denial of service attack. OpenSSL itself uses the GENERAL_NAME_cmp function for two purposes: 1) Comparing CRL distribution point names between an available CRL and a CRL distribution point embedded in an X509 certificate 2) When verifying that a timestamp response token signer matches the timestamp authority name (exposed via the API functions TS_RESP_verify_response and TS_RESP_verify_token) If an attacker can control both items being compared then that attacker could trigger a crash. For example if the attacker can trick a client or server into checking a malicious certificate against a malicious CRL then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a certificate. This checking happens prior to the signatures on the certificate and CRL being verified. OpenSSL's s_server, s_client and verify tools have support for the "-crl_download" option which implements automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that an unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL's parser will accept and hence trigger this attack. All OpenSSL 1.1.1 and 1.0.2 versions are affected by this issue. Other OpenSSL releases are out of support and have not been checked. Fixed in OpenSSL 1.1.1i (Affected 1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w). CVE-2020-1971 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 important 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2020-1971.html CVE-2020-1971 https://bugzilla.suse.com/1179491 SUSE Bug 1179491 https://bugzilla.suse.com/1196179 SUSE Bug 1196179 https://bugzilla.suse.com/1199303 SUSE Bug 1199303 Matrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference "homeserver" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`). CVE-2020-26257 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 moderate 4 AV:N/AC:L/Au:S/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2020-26257.html CVE-2020-26257 AuthRestServlet in Matrix Synapse before 1.21.0 is vulnerable to XSS due to unsafe interpolation of the session GET parameter. This allows a remote attacker to execute an XSS attack on the domain Synapse is hosted on, by supplying the victim user with a malicious URL to the /_matrix/client/r0/auth/*/fallback/web or /_matrix/client/unstable/auth/*/fallback/web Synapse endpoints. CVE-2020-26891 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 moderate 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2020-26891.html CVE-2020-26891 https://bugzilla.suse.com/1179186 SUSE Bug 1179186 Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.33.2 "Push rules" can specify conditions under which they will match, including `event_match`, which matches event content against a pattern including wildcards. Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events. The issue is patched in version 1.33.2. A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy. CVE-2021-29471 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 moderate 5 AV:N/AC:L/Au:N/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2021-29471.html CVE-2021-29471 https://bugzilla.suse.com/1185947 SUSE Bug 1185947 An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j). CVE-2021-3449 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 important 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2021-3449.html CVE-2021-3449 https://bugzilla.suse.com/1183852 SUSE Bug 1183852 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`. CVE-2021-39163 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 moderate 3.5 AV:N/AC:M/Au:S/C:P/I:N/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2021-39163.html CVE-2021-39163 https://bugzilla.suse.com/1190037 SUSE Bug 1190037 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 membership (list of members, with their display names) of a room if they know the ID of the room. The vulnerability is limited to rooms with `shared` history visibility. Furthermore, the unauthorised user must be using an account on a vulnerable homeserver that is in the room. Server administrators should upgrade to 1.41.1 or later in order to receive the patch. One workaround is available. Administrators of servers that use a reverse proxy could, with potentially unacceptable loss of functionality, block the endpoints: `/_matrix/client/r0/rooms/{room_id}/members` with `at` query parameter, and `/_matrix/client/unstable/rooms/{room_id}/members` with `at` query parameter. CVE-2021-39164 openSUSE Tumbleweed:matrix-synapse-1.43.0-1.1 moderate 3.5 AV:N/AC:M/Au:S/C:P/I:N/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2021-39164.html CVE-2021-39164 https://bugzilla.suse.com/1190038 SUSE Bug 1190038