CVE-2018-10195: lrzsz before version 0.12.21~rc can leak information to the receiving side due to an incorrect length check in
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Routine
HIGH 7.1WATCHLISTUPGRADEDOWNGRADEMITIGATE
CVE-2018-10195 is a high-severity flaw (CVSS 7.1) affecting lrzsz, linux enterprise debuginfo, linux enterprise desktop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
lrzsz before version 0.12.21~rc can leak information to the receiving side due to an incorrect length check in the function zsdata that causes a size_t to wrap around.
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
suse linux enterprise desktop MITIGATE
Affected: 12 sp3
Fixed in: no fixed release known
Safe to downgrade to: a release before 12
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
suse linux enterprise server MITIGATE
Affected: 11 sp4
Fixed in: no fixed release known
Safe to downgrade to: a release before 11
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
suse linux enterprise server MITIGATE
Affected: 12 sp3
Fixed in: no fixed release known
Safe to downgrade to: a release before 12
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
debian debian linux MITIGATE
Affected: 9.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 9.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-10195?
lrzsz: upgrade to newer than 0.12.20; linux enterprise debuginfo: downgrade or apply the listed mitigation; linux enterprise desktop: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2018-10195 being exploited?
CVE-2018-10195 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-10195 affect?
CVE-2018-10195 affects lrzsz, linux enterprise debuginfo, linux enterprise desktop. Severity is high (CVSS 7.1). lrzsz before version 0.12.21~rc can leak information to the receiving side due to an incorrect length check in the function zsdata that causes a size_t to wrap around.
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