CVE-2018-15599 The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76 is prone to a user enumeration vulnerability because username validity affects how fields in SSH_MSG_USERAUTH messages....
MediumCVSS 5.3
EPSS 2.7%
- Published
- Updated
- Exploit status
- No public exploit known
Description
The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76 is prone to a user enumeration vulnerability because username validity affects how fields in SSH_MSG_USERAUTH messages are handled, a similar issue to CVE-2018-15473 in an unrelated codebase.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/dropbear(Debian:12) | < 2018.76-4 | 2018.76-4 |
| debian/dropbear(Debian:13) | < 2018.76-4 | 2018.76-4 |
| debian/dropbear(Debian:14) | < 2018.76-4 | 2018.76-4 |
| debian linux | = 8.0 | No fix listed |
| dropbear ssh project dropbear ssh | <= 2018.76 | No fix listed |
| alpine/dropbear(Alpine:v3.10) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.11) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.12) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.13) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.14) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.15) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.16) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.17) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.18) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.19) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.20) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.21) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.22) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.23) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.24) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.5) | < 2017.75-r1 | 2017.75-r1 |
| alpine/dropbear(Alpine:v3.6) | < 2017.75-r1 | 2017.75-r1 |
| alpine/dropbear(Alpine:v3.7) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.8) | < 2018.76-r2 | 2018.76-r2 |
| alpine/dropbear(Alpine:v3.9) | < 2018.76-r2 | 2018.76-r2 |
References
- Debian Security Tracker CVE-2018-15599 vendor-advisory
- lists.ucc.gu.uwa.edu.au mailing-list third-party-advisory
- lists.ucc.gu.uwa.edu.au mailing-list third-party-advisory
- [debian-lts-announce] 20180827 [SECURITY] [DLA 1476-1] dropbear security update mailing-list third-party-advisory
- matt.ucc.asn.au
- old.reddit.com third-party-advisory
- security.alpinelinux.org vendor-advisory
- bugs.debian.org issue-tracking