CVE-2020-29573
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of "Fixed for glibc 2.33" in the 26649 reference.
Overview
- CVE ID
- CVE-2020-29573
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-12-06T00:15:11
- Last Modified Date
- 2023-04-26T19:09:21
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x86:* | 1 | OR | 2.23 | |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://sourceware.org/bugzilla/show_bug.cgi?id=26649 | Issue Tracking Patch Third Party Advisory |
| https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html | Patch Third Party Advisory |
| https://security.gentoo.org/glsa/202101-20 | |
| https://security.netapp.com/advisory/ntap-20210122-0004/ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-29573 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29573 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:26:03 | Added to TrackCVE | |||
| 2022-12-05 17:38:20 | 2020-12-06T00:15Z | 2020-12-06T00:15:11 | CVE Published Date | updated |
| 2022-12-05 17:38:20 | 2021-01-26T18:15:52 | CVE Modified Date | updated | |
| 2022-12-05 17:38:20 | Undergoing Analysis | Vulnerability Status | updated | |
| 2023-04-26 19:31:34 | 2023-04-26T19:09:21 | CVE Modified Date | updated | |
| 2023-04-26 19:31:34 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |