Lynx through 2.8.9 mishandles the userinfo subcomponent of a URI, which allows remote attackers to discover cleartext credentials because they may appear in SNI data.
Weakness
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Lynx | Lynx_project | * | 2.8.9 (including) |
| Red Hat Enterprise Linux 8 | RedHat | lynx-0:2.8.9-4.el8 | * |
| Lynx | Ubuntu | bionic | * |
| Lynx | Ubuntu | esm-apps/bionic | * |
| Lynx | Ubuntu | esm-apps/focal | * |
| Lynx | Ubuntu | esm-apps/xenial | * |
| Lynx | Ubuntu | focal | * |
| Lynx | Ubuntu | hirsute | * |
| Lynx | Ubuntu | trusty | * |
| Lynx | Ubuntu | upstream | * |
| Lynx | Ubuntu | xenial | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/102.html
- https://cwe.mitre.org/data/definitions/474.html
- https://cwe.mitre.org/data/definitions/50.html
- https://cwe.mitre.org/data/definitions/509.html
- https://cwe.mitre.org/data/definitions/551.html
- https://cwe.mitre.org/data/definitions/555.html
- https://cwe.mitre.org/data/definitions/560.html
- https://cwe.mitre.org/data/definitions/561.html
- https://cwe.mitre.org/data/definitions/600.html
- https://cwe.mitre.org/data/definitions/644.html
- https://cwe.mitre.org/data/definitions/645.html
- https://cwe.mitre.org/data/definitions/652.html
- https://cwe.mitre.org/data/definitions/653.html
References
- http://www.openwall.com/lists/oss-security/2021/08/07/11
- http://www.openwall.com/lists/oss-security/2021/08/07/12
- http://www.openwall.com/lists/oss-security/2021/08/07/9
- https://bugs.debian.org/991971
- https://github.com/w3c/libwww/blob/f010b4cc58d32f34b162f0084fe093f7097a61f0/Library/src/HTParse.c#L118
- https://lists.debian.org/debian-lts-announce/2021/08/msg00010.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7YMUHFJJWTZ6HBHTYXVDPNZINGGURHDW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K6PZF7JNTFCOJ62HXZG4Q2NEHSZ6IO2V/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKNK7GQBJBUBMJVNKVC7RTCYWUYMFJQW/
- https://lynx.invisible-island.net/current/CHANGES.html
- https://www.debian.org/security/2021/dsa-4953
- https://www.openwall.com/lists/oss-security/2021/08/07/1
- https://www.openwall.com/lists/oss-security/2021/08/07/11
- http://www.openwall.com/lists/oss-security/2021/08/07/11
- http://www.openwall.com/lists/oss-security/2021/08/07/12
- http://www.openwall.com/lists/oss-security/2021/08/07/9
- https://bugs.debian.org/991971
- https://github.com/w3c/libwww/blob/f010b4cc58d32f34b162f0084fe093f7097a61f0/Library/src/HTParse.c#L118
- https://lists.debian.org/debian-lts-announce/2021/08/msg00010.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7YMUHFJJWTZ6HBHTYXVDPNZINGGURHDW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K6PZF7JNTFCOJ62HXZG4Q2NEHSZ6IO2V/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKNK7GQBJBUBMJVNKVC7RTCYWUYMFJQW/
- https://lynx.invisible-island.net/current/CHANGES.html
- https://www.debian.org/security/2021/dsa-4953
- https://www.openwall.com/lists/oss-security/2021/08/07/1
- https://www.openwall.com/lists/oss-security/2021/08/07/11