Bug 1478359 - (CVE-2017-12424) CVE-2017-12424 shadow-utils: Buffer overflow via newusers tool
CVE-2017-12424 shadow-utils: Buffer overflow via newusers tool
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On: 1491933
Blocks: 1478361
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Reported: 2017-08-04 08:27 EDT by Adam Mariš
Modified: 2017-09-15 00:49 EDT (History)
3 users (show)

See Also:
Fixed In Version: shadow-utils 4.5
Doc Type: If docs needed, set a value
Doc Text:
A buffer overflow flaw leading to heap memory corruption was found in the shadow-utils's newusers utility. A local, authenticated attacker could potentially use this flaw to crash the newusers process by supplying crafted data to it.
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Last Closed: 2017-09-15 00:49:30 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-08-04 08:27:05 EDT
In shadow before 4.5, the newusers tool could be made to manipulate
internal data structures in ways unintended by the authors. Malformed
input may lead to crashes (with a buffer overflow or other memory
corruption) or other unspecified behaviors. This crosses a privilege
boundary in, for example, certain web-hosting environments in which a
Control Panel allows an unprivileged user account to create

Upstream patch:

Comment 3 Dhiru Kholia 2017-09-15 00:46:50 EDT
Created shadow-utils tracking bugs for this issue:

Affects: fedora-all [bug 1491933]

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