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Vulnerability details: VCID-tb83-ecmn-aaag
Vulnerability ID VCID-tb83-ecmn-aaag
Aliases CVE-2020-29573
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-121 Stack-based Buffer Overflow
System Score Found at
generic_textual Low http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-29573.html
rhas Moderate https://access.redhat.com/errata/RHSA-2021:0348
rhas Moderate https://access.redhat.com/errata/RHSA-2021:2813
rhas Moderate https://access.redhat.com/errata/RHSA-2021:2998
rhas Moderate https://access.redhat.com/errata/RHSA-2021:3315
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-29573.json
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.001 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.001 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.001 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
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epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
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epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
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epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
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epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
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epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
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epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00192 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00221 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00221 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00221 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00221 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
epss 0.00358 https://api.first.org/data/v1/epss?cve=CVE-2020-29573
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1905213
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29573
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-29573
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-29573
archlinux Medium https://security.archlinux.org/AVG-1324
generic_textual Low https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-29573.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-29573.json
https://api.first.org/data/v1/epss?cve=CVE-2020-29573
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29573
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/202101-20
https://security.netapp.com/advisory/ntap-20210122-0004/
https://sourceware.org/bugzilla/show_bug.cgi?id=26649
https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html
1905213 https://bugzilla.redhat.com/show_bug.cgi?id=1905213
AVG-1324 https://security.archlinux.org/AVG-1324
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x86:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x86:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
CVE-2020-29573 https://nvd.nist.gov/vuln/detail/CVE-2020-29573
RHSA-2021:0348 https://access.redhat.com/errata/RHSA-2021:0348
RHSA-2021:0949 https://access.redhat.com/errata/RHSA-2021:0949
RHSA-2021:2813 https://access.redhat.com/errata/RHSA-2021:2813
RHSA-2021:2998 https://access.redhat.com/errata/RHSA-2021:2998
RHSA-2021:3315 https://access.redhat.com/errata/RHSA-2021:3315
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-29573.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-29573
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-29573
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.2233
EPSS Score 0.00087
Published At April 13, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.