yubiserver up to 0.5 sprintf buffer overflow

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

Summaryinfo

A vulnerability described as critical has been identified in yubiserver up to 0.5. Affected is the function sprintf. Such manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2015-0843. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in yubiserver up to 0.5 and classified as critical. Affected by this issue is the function sprintf. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

yubiserver before 0.6 is to buffer overflows due to misuse of sprintf.

The advisory is shared for download at bugs.debian.org. This vulnerability is handled as CVE-2015-0843 since 01/07/2015. The exploitation is known to be easy. There are known technical details, but no exploit is available.

Upgrading to version 0.6 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2015-0855). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: yubiserver 0.6

Timelineinfo

01/07/2015 CVE reserved
06/27/2025 +3823 days Advisory disclosed
06/27/2025 +0 days VulDB entry created
06/30/2025 +3 days VulDB entry last update

Sourcesinfo

Advisory: bugs.debian.org
Status: Confirmed

CVE: CVE-2015-0843 (🔒)
GCVE (CVE): GCVE-0-2015-0843
GCVE (VulDB): GCVE-100-314060
EUVD: 🔒

Entryinfo

Created: 06/27/2025 07:03
Updated: 06/30/2025 23:53
Changes: 06/27/2025 07:03 (54), 06/28/2025 04:58 (1), 06/30/2025 23:53 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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