CVE-2017-9471

In ytnef 1.9.2, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial of...

5.5 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.17%Down 0.1 points since Apr 14, 2021

What each source reports

NVD Score used 5.5

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.

Record: CVE-2017-9471
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness: CWE-125
Updated: 2026-11-02

CVE List No score

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.

Record: CVE-2017-9471
Updated: 2026-11-02

EUVDEUVD-2017-18403 No score

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.

Record: EUVD-2017-18403
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mgvm-xh8j-rpqx 5.5

In ytnef 1.9.2, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial of...

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.

Record: GHSA-mgvm-xh8j-rpqx
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

OSV 5.5

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.

Record: CVE-2017-9471
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2017-9471 5.5

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.

Record: DEBIAN-CVE-2017-9471
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2017-9471 5.5

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.

Record: UBUNTU-CVE-2017-9471
CVSS 3.0: 5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUSN-3667-1 No score

libytnef vulnerabilities

It was discovered that libytnef incorrectly handled certain files. An attacker could possibly use this to cause a denial of service. (CVE-2017-12141, CVE-2017-9146, CVE-2017-9471, CVE-2017-9473)

It was discovered that libytnef incorrectly handled certain files. An attacker could possibly use this to access sensitive information. (CVE-2017-9058)

Record: USN-3667-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`libytnef` Debian:12	before 1.9.3-1	1.9.3-1
`libytnef` Debian:13	before 1.9.3-1	1.9.3-1
`libytnef` Debian:14	before 1.9.3-1	1.9.3-1
`libytnef` Ubuntu:14.04:LTS	before 1.5-6ubuntu0.2, plus listed versions 1.5-51.5-61.5-6ubuntu0.1	1.5-6ubuntu0.2
`libytnef` Ubuntu:16.04:LTS	All versions, plus listed versions 1.5-61.5-91.5-9ubuntu0.1	None known
`libytnef` Ubuntu:18.04:LTS	All versions, plus listed versions 1.9.2-2	None known
`libytnef` Ubuntu:14.04:LTS From an advisory covering 5 CVEs	before 1.5-6ubuntu0.2, plus listed versions 1.5-51.5-61.5-6ubuntu0.1	1.5-6ubuntu0.2

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-9471 is a medium vulnerability (CVSS 5.5) in Ytnef Project Ytnef, published June 7, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.17%, the 67th percentile. Fixed in libytnef 1.9.3-1.

References

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