CVE-2017-14062
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows...
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.
- Record
CVE-2017-14062- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-190
- Updated
- 2026-11-02
CVE List No score
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.
- Record
CVE-2017-14062- Updated
- 2026-11-02
EUVDEUVD-2017-5576 No score
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.
- Record
EUVD-2017-5576- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-783h-w6p2-278g
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows...
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.
- Record
GHSA-783h-w6p2-278g- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
OSV
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.
- Record
CVE-2017-14062- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2017-14062
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.
- Record
DEBIAN-CVE-2017-14062- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Show 7 moreShow less
OSVUBUNTU-CVE-2017-14062
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.
- Record
UBUNTU-CVE-2017-14062- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVMGASA-2017-0365 No score
Updated libidn packages fix security vulnerability
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact. (CVE-2017-14062)
- Record
MGASA-2017-0365- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10949-1 No score
libidn-devel-1.38-1.2 on GA media
These are all security issues fixed in the libidn-devel-1.38-1.2 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10949-1- Updated
- 2026-11-02
OSVSUSE-SU-2018:0878-1 No score
Security update for libidn
This update for libidn fixes one issues.
This security issue was fixed:
- CVE-2017-14062: Prevent integer overflow in the decode_digit function that allowed remote attackers to cause a denial of service or possibly have unspecified other impact (bsc#1056450).
- Record
SUSE-SU-2018:0878-1- Updated
- 2026-11-02
OSVSUSE-SU-2018:0903-1 No score
Security update for libidn
This update for libidn fixes one issues.
This security issue was fixed:
- CVE-2017-14062: Prevent integer overflow in the decode_digit function that allowed remote attackers to cause a denial of service or possibly have unspecified other impact (bsc#1056450).
- Record
SUSE-SU-2018:0903-1- Updated
- 2026-11-02
OSVUSN-3421-2 No score
libidn2-0 vulnerability
USN-3421-1 fixed a vulnerability in Libidn2. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
- Record
USN-3421-2- Updated
- 2026-11-02
OSVUSN-3434-1 No score
libidn vulnerability
It was discovered that Libidn incorrectly handled decoding certain digits. A remote attacker could use this issue to cause Libidn to crash, resulting in a denial of service, or possibly execute arbitrary code.
- Record
USN-3434-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libidnDebian:12 |
before 1.33-2 | 1.33-2 |
libidnDebian:13 |
before 1.33-2 | 1.33-2 |
libidnDebian:14 |
before 1.33-2 | 1.33-2 |
libidnDebian:7 |
before 1.25-2+deb7u3, plus listed versions 1.25-21.25-2+deb7u11.25-2+deb7u2 |
1.25-2+deb7u3 |
libidn2-0Debian:7 |
before 0.8-2+deb7u1, plus listed versions 0.8-2 |
0.8-2+deb7u1 |
libidnDebian:8 |
before 1.29-1+deb8u3, plus listed versions 1.29-11.29-1+deb8u11.29-1+deb8u2 |
1.29-1+deb8u3 |
libidn2-0Debian:8 |
before 0.10-2+deb8u1, plus listed versions 0.10-2 |
0.10-2+deb8u1 |
libidn2-0Debian:9 |
before 0.16-1+deb9u1, plus listed versions 0.16-1 |
0.16-1+deb9u1 |
libidnMageia:5 |
before 1.33-1.1.mga5 | 1.33-1.1.mga5 |
libidnMageia:6 |
before 1.33-1.1.mga6 | 1.33-1.1.mga6 |
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| Package | Affected | Fixed |
|---|---|---|
libidnSUSE:Linux Enterprise Desktop 12 SP3 |
before 1.28-5.3.1 | 1.28-5.3.1 |
libidnSUSE:Linux Enterprise Software Development Kit 12 SP3 |
before 1.28-5.3.1 | 1.28-5.3.1 |
libidnSUSE:Linux Enterprise Server 12 SP3 |
before 1.28-5.3.1 | 1.28-5.3.1 |
libidnSUSE:Linux Enterprise Server for SAP Applications 12 SP3 |
before 1.28-5.3.1 | 1.28-5.3.1 |
libidnSUSE:Linux Enterprise Software Development Kit 11 SP4 |
before 1.10-7.3.1 | 1.10-7.3.1 |
libidnSUSE:Linux Enterprise Server 11 SP4 |
before 1.10-7.3.1 | 1.10-7.3.1 |
libidnSUSE:Linux Enterprise Server for SAP Applications 11 SP4 |
before 1.10-7.3.1 | 1.10-7.3.1 |
libidnUbuntu:14.04:LTS |
before 1.28-1ubuntu2.2, plus listed versions 1.28-1ubuntu11.28-1ubuntu21.28-1ubuntu2.1 |
1.28-1ubuntu2.2 |
libidn2-0Ubuntu:Pro:14.04:LTS |
before 0.9-1ubuntu0.1~esm1, plus listed versions 0.9-1 |
0.9-1ubuntu0.1~esm1 |
libidnUbuntu:16.04:LTS |
before 1.32-3ubuntu1.2, plus listed versions 1.28-1ubuntu21.32-3ubuntu11.32-3ubuntu1.1 |
1.32-3ubuntu1.2 |
libidn2-0Ubuntu:Pro:16.04:LTS |
before 0.10-3ubuntu0.1~esm1, plus listed versions 0.10-3 |
0.10-3ubuntu0.1~esm1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-14062 is a critical vulnerability (CVSS 9.8) in Gnu Libidn2, published August 31, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.89%, the 90th percentile. Fixed in libidn 1.33-2.
References
debian.org/security/2017/dsa-3988
gitlab.com/libidn/libidn2/blob/master/NEWS
lists.debian.org/debian-lts-announce/2018/07/msg00040.html
nvd.nist.gov/vuln/detail/CVE-2017-14062
github.com/advisories/GHSA-783h-w6p2-278g
Show 14 moreShow less
security-tracker.debian.org/tracker/CVE-2017-14062
advisories.mageia.org/MGASA-2017-0365.html
bugs.mageia.org/show_bug.cgi?id=21800
usn.ubuntu.com/usn/usn-3434-1
suse.com/support/update/announcement/2018/suse-su-20180878-1
bugzilla.suse.com/1056450
ubuntu.com/security/CVE-2017-14062
cve.org/CVERecord?id=CVE-2017-14062