G_variant_byteswap() can take a long time with some non-normal inputs
Published Sep 14, 2023
5.5
MEDIUMCVSS 3.1
EPSS 0.38%
Description
A flaw was found in GLib. GVariant deserialization is vulnerable to a slowdown issue where a crafted GVariant can cause excessive processing, leading to denial of service.
Affected products
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- Vendor n/a Product Glib2 Defaultaffected
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| Fedora | Extra Packages for Enterprise Linux | affected |
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| Fedora | Fedora 37 | affected |
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| Fedora | Fedora 38 | affected |
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| Red Hat | Red Hat Enterprise Linux 8 | affected |
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| Red Hat | Red Hat Enterprise Linux 9 | affected |
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| n/a | Glib2 | affected |
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No data.
Red Hat Enterprise Linux 9
glib2-0:2.68.4-11.el9
Fixed · RHSA-2023:6631
Red Hat Enterprise Linux 9
glib2-0:2.68.4-11.el9
Fixed · RHSA-2023:6631
Red Hat Enterprise Linux 9
mingw-glib2-0:2.78.0-1.el9
Fixed · RHSA-2024:2528
Red Hat Enterprise Linux 6
glib2
Out of support scope
Red Hat Enterprise Linux 7
glib2
Out of support scope
Red Hat Enterprise Linux 8
glib2
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 9 | glib2-0:2.68.4-11.el9 | Fixed | RHSA-2023:6631 |
| Red Hat Enterprise Linux 9 | glib2-0:2.68.4-11.el9 | Fixed | RHSA-2023:6631 |
| Red Hat Enterprise Linux 9 | mingw-glib2-0:2.78.0-1.el9 | Fixed | RHSA-2024:2528 |
| Red Hat Enterprise Linux 6 | glib2 | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | glib2 | Out of support scope | n/a |
| Red Hat Enterprise Linux 8 | glib2 | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This vulnerability allows for a denial of service attack to be performed against applications that process untrusted GVariant input, compromising application availability by consuming excessive processing time or utilizing a large quantity of memory. The most likely threat is from a local user, which may be possible depending on the configuration of the service and the format of parameters that it expects. While a remote attack is possible if the application is configured to read GVariants over a network connection, this is not the default configuration which makes the likelihood low. Because the most widely available attack vector is local and the consequences are limited to denial of service, Red Hat Product Security rates the impact as Low.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jun 3, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2023–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (6 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.38% (0.00379) | 29.45th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.38% (0.00376) | 29.13th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00070) | 18.86th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00048) | 19.99th | v3 (v2023.03.01) |
| Apr 18, 2024 | 0.05% (0.00048) | 16.58th | v3 (v2023.03.01) |
| Sep 15, 2023 | 0.05% (0.00047) | 14.56th | v3 (v2023.03.01) |
References (8)
- https://access.redhat.com/security/cve/CVE-2023-32611 vdb-entryx_refsource_REDHATThird Party AdvisoryVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2211829 issue-trackingx_refsource_REDHATIssue TrackingThird Party Advisory
- https://gitlab.gnome.org/GNOME/glib/-/issues/2797 Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00030.html
- https://nvd.nist.gov/vuln/detail/CVE-2023-32611
- https://security.gentoo.org/glsa/202311-18
- https://security.netapp.com/advisory/ntap-20231027-0005/
- https://www.cve.org/CVERecord?id=CVE-2023-32611
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2023-32611 | vdb-entryx_refsource_REDHATThird Party AdvisoryVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2211829 | issue-trackingx_refsource_REDHATIssue TrackingThird Party Advisory | |
| https://gitlab.gnome.org/GNOME/glib/-/issues/2797 | Vendor Advisory | |
| https://lists.debian.org/debian-lts-announce/2023/09/msg00030.html | ||
| https://nvd.nist.gov/vuln/detail/CVE-2023-32611 | ||
| https://security.gentoo.org/glsa/202311-18 | ||
| https://security.netapp.com/advisory/ntap-20231027-0005/ | ||
| https://www.cve.org/CVERecord?id=CVE-2023-32611 |
Change history (4)
- MITRE
- CVSS vector changed from CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H to
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H → CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CVSS score changed from 6.5 to
5.5 6.5 → 5.5
- CVSS vector changed from CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H to
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- REDHAT
- CVSS vector changed from CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H to
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H → CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CVSS score changed from 5.5 to
6.5 5.5 → 6.5
- CVSS vector changed from CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H to
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H