Description
Format string vulnerability in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via format string specifiers in the (1) username or (2) host argument.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | dropbear | 2016.74-1 | — |
| Debian 13 | dropbear | 2016.74-1 | — |
| Debian 12 | dropbear | 2016.74-1 | — |
| Debian 7 | dropbear | 2012.55-1.3+deb7u1 | DLA-634-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | dropbear | No fix yet | — |
Advisories 2
- DLA-634-1 dropbear - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SCA-2022-0007 Vulnerabilities in SICK MARSIC300 SICK PSIRT · Apr 21, 2022