CVE-2018-19543: An issue was discovered in JasPer 2.0.14
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HIGH 7.8WATCHLISTDOWNGRADEMITIGATEMITIGATE
CVE-2018-19543 is a high-severity flaw (CVSS 7.8) affecting jasper, ubuntu linux, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue was discovered in JasPer 2.0.14. There is a heap-based buffer over-read of size 8 in the function jp2_decode in libjasper/jp2/jp2_dec.c.
Why this priority
High severity
Public exploit reference
On your watchlist
No fix is published yet: follow the downgrade or mitigation steps.
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.
canonical ubuntu linux MITIGATE
Affected: 14.04 · 16.04
Fixed in: no fixed release known
Safe to downgrade to: a release before 14.04
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: 8.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 8.0
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.
suse linux enterprise desktop MITIGATE
Affected: 12 sp3 · 12 sp4
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 sp3 · 11 sp4 · 12 sp1 · 12 sp2
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.
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-2018-19543?
jasper: downgrade or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2018-19543 being exploited?
CVE-2018-19543 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-2018-19543 affect?
CVE-2018-19543 affects jasper, ubuntu linux, debian linux. Severity is high (CVSS 7.8). An issue was discovered in JasPer 2.0.14. There is a heap-based buffer over-read of size 8 in the function jp2_decode in libjasper/jp2/jp2_dec.c.
How urgent is CVE-2018-19543?
Priority 56/100. High severity; Public exploit reference; On your watchlist
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