From b5a568776985604b24a29c53e9f7ca09f2a3e0fd Mon Sep 17 00:00:00 2001 From: Robert Schultheis Date: Wed, 13 Jan 2021 11:10:33 -0700 Subject: [PATCH] Add CVE-2020-26262 for GHSA-6g6j-r9rf-cm7p --- 2020/26xxx/CVE-2020-26262.json | 95 +++++++++++++++++++++++++++++++--- 1 file changed, 89 insertions(+), 6 deletions(-) diff --git a/2020/26xxx/CVE-2020-26262.json b/2020/26xxx/CVE-2020-26262.json index 5b2d1aca9958..17d1bf57da4d 100644 --- a/2020/26xxx/CVE-2020-26262.json +++ b/2020/26xxx/CVE-2020-26262.json @@ -1,18 +1,101 @@ { - "data_type": "CVE", - "data_format": "MITRE", - "data_version": "4.0", "CVE_data_meta": { + "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-26262", - "ASSIGNER": "cve@mitre.org", - "STATE": "RESERVED" + "STATE": "PUBLIC", + "TITLE": "Loopback bypass in Coturn" }, + "affects": { + "vendor": { + "vendor_data": [ + { + "product": { + "product_data": [ + { + "product_name": "coturn", + "version": { + "version_data": [ + { + "version_value": "< 4.5.2" + } + ] + } + } + ] + }, + "vendor_name": "coturn" + } + ] + } + }, + "data_format": "MITRE", + "data_type": "CVE", + "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", - "value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided." + "value": "Coturn is free open source implementation of TURN and STUN Server. Coturn before version 4.5.2 by default does not allow peers to connect and relay packets to loopback addresses in the range of `127.x.x.x`. However, it was observed that when sending a `CONNECT` request with the `XOR-PEER-ADDRESS` value of `0.0.0.0`, a successful response was received and subsequently, `CONNECTIONBIND` also received a successful response. Coturn then is able to relay packets to the loopback interface.\n\nAdditionally, when coturn is listening on IPv6, which is default, the loopback interface can also be reached by making use of either `[::1]` or `[::]` as the peer address.\n\nBy using the address `0.0.0.0` as the peer address, a malicious user will be able to relay packets to the loopback interface, unless `--denied-peer-ip=0.0.0.0` (or similar) has been specified. Since the default configuration implies that loopback peers are not allowed, coturn administrators may choose to not set the `denied-peer-ip` setting.\n\nThe issue patched in version 4.5.2. \n\nAs a workaround the addresses in the address block `0.0.0.0/8`, `[::1]` and `[::]` should be denied by default unless `--allow-loopback-peers` has been specified." + } + ] + }, + "impact": { + "cvss": { + "attackComplexity": "LOW", + "attackVector": "NETWORK", + "availabilityImpact": "NONE", + "baseScore": 7.2, + "baseSeverity": "HIGH", + "confidentialityImpact": "LOW", + "integrityImpact": "LOW", + "privilegesRequired": "NONE", + "scope": "CHANGED", + "userInteraction": "NONE", + "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", + "version": "3.1" + } + }, + "problemtype": { + "problemtype_data": [ + { + "description": [ + { + "lang": "eng", + "value": "CWE-441 Unintended Proxy or Intermediary ('Confused Deputy')" + } + ] + }, + { + "description": [ + { + "lang": "eng", + "value": "CWE-682 Incorrect Calculation" + } + ] + } + ] + }, + "references": { + "reference_data": [ + { + "name": "https://github.com/coturn/coturn/security/advisories/GHSA-6g6j-r9rf-cm7p", + "refsource": "CONFIRM", + "url": "https://github.com/coturn/coturn/security/advisories/GHSA-6g6j-r9rf-cm7p" + }, + { + "name": "https://github.com/coturn/coturn/commit/abfe1fd08d78baa0947d17dac0f7411c3d948e4d", + "refsource": "MISC", + "url": "https://github.com/coturn/coturn/commit/abfe1fd08d78baa0947d17dac0f7411c3d948e4d" + }, + { + "name": "https://github.com/coturn/coturn/blob/57180ab60afcaeb13537e69ae8cb8aefd8f3f546/ChangeLog#L48", + "refsource": "MISC", + "url": "https://github.com/coturn/coturn/blob/57180ab60afcaeb13537e69ae8cb8aefd8f3f546/ChangeLog#L48" } ] + }, + "source": { + "advisory": "GHSA-6g6j-r9rf-cm7p", + "discovery": "UNKNOWN" } } \ No newline at end of file