title: W3m: out-of-bounds write in function checktype() in etc.c (incomplete fix for cve-2022-38223)
description: An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within the W3M application. This vulnerability is triggered by supplying a specially crafted HTML file to the w3m binary. Exploitation of this flaw could lead to application crashes, resulting in a denial of service condition.
problem types: Out-of-bounds Write
affected:
{
product: w3m
vendor: n/a
defaultStatus: affected
}
{
product: Fedora
vendor: Fedora
collectionURL: https://packages.fedoraproject.org/
packageName: w3m
defaultStatus: affected
}
{
product: Extra Packages for Enterprise Linux
vendor: Fedora
collectionURL: https://packages.fedoraproject.org/
packageName: w3m
defaultStatus: affected
}
metrics:
other: [
content: {'value': 'Moderate', 'namespace': 'https://access.redhat.com/security/updates/classification/'}
type: Red Hat severity rating
]