CVE-2023-44487 · cross-distro fix matrix

CVE-2023-44487: The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

Affects 7 Linux releases across 50 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2023-44487 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

haproxy→ fixed in1.8.13-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y haproxy
```
jetty9→ fixed in9.4.50-4+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y jetty9
```
netty→ fixed in1:4.1.48-4+deb11u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y netty
```
nghttp2→ fixed in1.43.0-1+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y nghttp2
```
tomcat9→ fixed in9.0.43-2~deb11u7urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tomcat9
```
trafficserver→ fixed in8.1.9+ds-1~deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y trafficserver
```

Debian bookworm

Source: Debian Security Tracker

haproxy→ fixed in1.8.13-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y haproxy
```
jetty9→ fixed in9.4.50-4+deb12u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y jetty9
```
netty→ fixed in1:4.1.48-7+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y netty
```
nghttp2→ fixed in1.52.0-1+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y nghttp2
```
tomcat10→ fixed in10.1.6-1+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tomcat10
```
tomcat9→ fixed in9.0.70-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tomcat9
```
trafficserver→ fixed in9.2.3+ds-1+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y trafficserver
```

Debian trixie

Source: Debian Security Tracker

dnsdist→ fixed in1.8.2-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y dnsdist
```
haproxy→ fixed in1.8.13-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y haproxy
```
jetty9→ fixed in9.4.53-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y jetty9
```
netty→ fixed in1:4.1.48-8urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y netty
```
nghttp2→ fixed in1.57.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y nghttp2
```

nginx→ fixed in1.24.0-2urgency: unimportant

sudo apt-get install --only-upgrade -y nginx

tomcat10→ fixed in10.1.14-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tomcat10
```
tomcat9→ fixed in9.0.70-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tomcat9
```
varnish→ fixed in7.5.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y varnish
```

Alpine v3.20

Source: Alpine secdb

nghttp2→ fixed in1.57.0-r0
```
apk update && apk add --upgrade nghttp2
```
nginx→ fixed in1.24.0-r12
```
apk update && apk add --upgrade nginx
```

dotnet6-build→ fixed in6.0.123-r0

apk update && apk add --upgrade dotnet6-build

dotnet6-build→ fixed in6.0.124-r0

apk update && apk add --upgrade dotnet6-build

dotnet6-runtime→ fixed in6.0.23-r0

apk update && apk add --upgrade dotnet6-runtime

dotnet6-runtime→ fixed in6.0.24-r0

apk update && apk add --upgrade dotnet6-runtime

go→ fixed in1.21.3-r0
```
apk update && apk add --upgrade go
```
grpc→ fixed in1.59.3-r0
```
apk update && apk add --upgrade grpc
```

jetty-runner→ fixed in9.4.53.20231009-r0

apk update && apk add --upgrade jetty-runner

netdata→ fixed in1.43.2-r1
```
apk update && apk add --upgrade netdata
```

openjdk21→ fixed in21.0.2_p13-r0

apk update && apk add --upgrade openjdk21

Alpine v3.21

Source: Alpine secdb

nghttp2→ fixed in1.57.0-r0
```
apk update && apk add --upgrade nghttp2
```
nginx→ fixed in1.24.0-r12
```
apk update && apk add --upgrade nginx
```
go→ fixed in1.21.3-r0
```
apk update && apk add --upgrade go
```
grpc→ fixed in1.59.3-r0
```
apk update && apk add --upgrade grpc
```

jetty-runner→ fixed in9.4.53.20231009-r0

apk update && apk add --upgrade jetty-runner

netdata→ fixed in1.43.2-r1
```
apk update && apk add --upgrade netdata
```

openjdk21→ fixed in21.0.2_p13-r0

apk update && apk add --upgrade openjdk21

trafficserver9→ fixed in9.2.3-r0

apk update && apk add --upgrade trafficserver9

Alpine edge

Source: Alpine secdb

nghttp2→ fixed in1.57.0-r0
```
apk update && apk add --upgrade nghttp2
```
nginx→ fixed in1.24.0-r12
```
apk update && apk add --upgrade nginx
```
go→ fixed in1.21.3-r0
```
apk update && apk add --upgrade go
```
grpc→ fixed in1.59.3-r0
```
apk update && apk add --upgrade grpc
```

jetty-runner→ fixed in9.4.53.20231009-r0

apk update && apk add --upgrade jetty-runner

netdata→ fixed in1.43.2-r1
```
apk update && apk add --upgrade netdata
```

openjdk21→ fixed in21.0.2_p13-r0

apk update && apk add --upgrade openjdk21

trafficserver9→ fixed in9.2.3-r0

apk update && apk add --upgrade trafficserver9

Alpine v3.18

Source: Alpine secdb

nghttp2→ fixed in1.57.0-r0
```
apk update && apk add --upgrade nghttp2
```

Are YOU affected by CVE-2023-44487?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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