ytnef 1.9.2 lib/ytnef.c SwapWord memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in ytnef 1.9.2. It has been rated as critical. This vulnerability affects the function SwapWord in the library lib/ytnef.c. Performing a manipulation results in memory corruption. This vulnerability is cataloged as CVE-2017-9471. The attack must be initiated from a local position. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in ytnef 1.9.2 (Document Reader Software). It has been classified as critical. This affects the function SwapWord in the library lib/ytnef.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In ytnef 1.9.2, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted file.

The bug was discovered 05/24/2017. The weakness was shared 06/07/2017 (Website). It is possible to read the advisory at blogs.gentoo.org. This vulnerability is uniquely identified as CVE-2017-9471 since 06/06/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 110286 (Ubuntu 14.04 LTS : libytnef vulnerabilities (USN-3667-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197154 (Ubuntu Security Notification for Libytnef Vulnerabilities (USN-3667-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (110286). The entries VDB-101470, VDB-101620, VDB-102041 and VDB-104738 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110286
Nessus Name: Ubuntu 14.04 LTS : libytnef vulnerabilities (USN-3667-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

05/24/2017 🔍
06/06/2017 +13 days 🔍
06/07/2017 +1 days 🔍
06/07/2017 +0 days 🔍
06/07/2017 +0 days 🔍
05/31/2018 +358 days 🔍
06/01/2018 +1 days 🔍
12/08/2022 +1651 days 🔍

Sourcesinfo

Advisory: USN-3667-1
Status: Not defined

CVE: CVE-2017-9471 (🔍)
GCVE (CVE): GCVE-0-2017-9471
GCVE (VulDB): GCVE-100-102039
See also: 🔍

Entryinfo

Created: 06/07/2017 19:49
Updated: 12/08/2022 08:18
Changes: 06/07/2017 19:49 (70), 10/14/2019 10:32 (6), 12/08/2022 08:18 (4)
Complete: 🔍
Cache ID: 216:E57:103

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