CVE-2021-38165
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in, but needs a user to act. High risk of data exposure.
- Exploit odds
- 3.9% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 3.9% in the next 30 days (EPSS).
- Severity: 5.3 MEDIUM (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 3.9% · EPSS, next 30 days
- Weakness
- CWE-522
- Record status
- Modified
Affected
- Lynx Project Lynx ≤ 2.8.9
- Debian Linux 9.0
- Debian Linux 10.0
- Fedoraproject Fedora 33
- Fedoraproject Fedora 34
- Fedoraproject Fedora 35
Attack profile CVSS 3.1 · 5.3
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-38165.md and follow it. Check whether this project is affected by CVE-2021-38165. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
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