#VU39452 Out-of-bounds read in Fedora and Netpbm - CVE-2017-5849

Vulnerability identifier: #VU39452

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-5849

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Fedora
Operating systems & Components / Operating system
Netpbm
Universal components / Libraries / Libraries used by multiple products

Vendor: Fedoraproject
netpbm.sourceforge.net

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

tiffttopnm in netpbm 10.47.63 does not properly use the libtiff TIFFRGBAImageGet function, which allows remote attackers to cause a denial of service (out-of-bounds read and write) via a crafted tiff image file, related to transposing width and height values.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Fedora: 24 - 25

Netpbm: 10.47.63 - 25

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External links
https://bugzilla.maptools.org/show_bug.cgi?id=2654
https://bugzilla.maptools.org/show_bug.cgi?id=2655
https://www.openwall.com/lists/oss-security/2017/02/02/2
https://www.securityfocus.com/bid/96011
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AF42A624FXVY3BYBHMAO6F2X7EJYHQE2/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LDK3BDMKIQL2NQ3SJZXPBEN2LSOUSSEE/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.