Description
A race condition in Guacamole's terminal emulator in versions 0.9.5 through 0.9.10-incubating could allow writes of blocks of printed data to overlap. Such overlapping writes could cause packet data to be misread as the packet length, resulting in the remaining data being written beyond the end of a statically-allocated buffer.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Guacamole | Apache Guacamole 0.9.5 to 0.9.10-incubating | — |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | guacamole-server | No fix yet | — |
| Ubuntu 22.04 LTS | guacamole-server | No fix yet | — |
| Ubuntu 18.04 LTS | guacamole-client +1 | No fix yet | — |
| Ubuntu 16.04 LTS | guacamole-client +1 | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.guacamole:guacamole-common | >= 0.9.5, < 0.9.11-incubating | 0.9.11-incubating | GHSA-3vv3-585q-wv6x |