| Name | CVE-2019-9897 |
| Description | Multiple denial-of-service attacks that can be triggered by writing to the terminal exist in PuTTY versions before 0.71. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1763-1, DSA-4423-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| putty (PTS) | jessie, jessie (lts) | 0.63-10+deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 0.67-3+deb9u1 | fixed |
| buster (security), buster, buster (lts) | 0.74-1+deb11u1~deb10u2 | fixed |
| bullseye | 0.74-1+deb11u2 | fixed |
| bullseye (security) | 0.74-1+deb11u1 | fixed |
| bookworm | 0.78-2+deb12u2 | fixed |
| bookworm (security) | 0.78-2+deb12u1 | fixed |
| sid, trixie | 0.81-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| putty | source | wheezy | (unfixed) | end-of-life | | |
| putty | source | jessie | 0.63-10+deb8u2 | | DLA-1763-1 | |
| putty | source | stretch | 0.67-3+deb9u1 | | DSA-4423-1 | |
| putty | source | (unstable) | 0.70-6 | | | |
Notes
https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-terminal-dos-one-column-cjk.html
https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=03777723e553024e94d8bfcf182f3a2e92ffb914
https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-terminal-dos-combining-chars-double-width-gtk.html
https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=daf91ef8ae9780bb1dfb534afa79e4babb89ba26
https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-terminal-dos-combining-chars.html
https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=da1c8f15b1bc14c855f0027cf06ba7f1a9c36f3c