CVE-2018-14779
CVSS V2 High 7.2
CVSS V3 Medium 6.8
Description
A buffer overflow issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the function `ykpiv_transfer_data()`: {% highlight c %} if(*out_len + recv_len - 2 > max_out) { fprintf(stderr, "Output buffer to small, wanted to write %lu, max was %lu.", *out_len + recv_len - 2, max_out); } if(out_data) { memcpy(out_data, data, recv_len - 2); out_data += recv_len - 2; *out_len += recv_len - 2; } {% endhighlight %} -- it is clearly checked whether the buffer is big enough to hold the data copied using `memcpy()`, but no error handling happens to avoid the `memcpy()` in such cases. This code path can be triggered with malicious data coming from a smartcard.
Overview
- CVE ID
- CVE-2018-14779
- Assigner
- cve@mitre.org
- Vulnerability Status
- Modified
- Published Version
- 2018-08-15T18:29:00
- Last Modified Date
- 2020-02-25T04:15:10
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:yubico:piv_manager:*:*:*:*:*:*:*:* | 1 | OR | 1.4.2 | |
| cpe:2.3:a:yubico:piv_manager:1.4.2:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:yubico:piv_manager:1.4.2b:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:yubico:piv_manager:1.4.2c:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:yubico:piv_manager:1.4.2d:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:yubico:piv_manager:1.4.2e:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:yubico:piv_manager:1.4.2f:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:yubico:piv_manager:1.4.2g:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:yubico:piv_tool:*:*:*:*:*:*:*:* | 1 | OR | 1.6.0 | |
| cpe:2.3:a:yubico:smart_card_minidriver:*:*:*:*:*:*:*:* | 1 | OR | 3.7.3.160 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:C/I:C/A:C
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 7.2
- Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 10
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- PHYSICAL
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 6.8
- Base Severity
- MEDIUM
- Exploitability Score
- 0.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://www.yubico.com/support/security-advisories/ysa-2018-03/ | Vendor Advisory |
| https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv/ | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2018/08/14/2 | Mailing List Third Party Advisory |
| https://usn.ubuntu.com/4276-1/ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-14779 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14779 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:48:57 | Added to TrackCVE | |||
| 2022-12-03 11:13:09 | 2018-08-15T18:29Z | 2018-08-15T18:29:00 | CVE Published Date | updated |
| 2022-12-03 11:13:09 | 2020-02-25T04:15:10 | CVE Modified Date | updated | |
| 2022-12-03 11:13:09 | Modified | Vulnerability Status | updated |