librsvg: Resource exhaustion via crafted SVG file with nested patterns
Published Feb 2, 2020
6.5
MEDIUMCVSS 3.1
EPSS 2.13%
Description
In xml.rs in GNOME librsvg before 2.46.2, a crafted SVG file with nested patterns can cause denial of service when passed to the library for processing. The attacker constructs pattern elements so that the number of final rendered objects grows exponentially.
Affected products
No data.
Configuration 1
Configuration 3
- 30
- 31
Configuration 4
- 9.0
Configuration 5
- 16.04
- 18.04
Configuration 6
- n/a
No data.
Red Hat Enterprise Linux 8
librsvg2-0:2.42.7-4.el8
Fixed · RHSA-2020:4709
Red Hat Enterprise Linux 5
firefox
Out of support scope
Red Hat Enterprise Linux 5
librsvg2
Out of support scope
Red Hat Enterprise Linux 6
chromium-browser
Out of support scope
Red Hat Enterprise Linux 6
firefox
Out of support scope
Red Hat Enterprise Linux 6
librsvg2
Out of support scope
Red Hat Enterprise Linux 6
thunderbird
Out of support scope
Red Hat Enterprise Linux 7
firefox
Will not fix
Red Hat Enterprise Linux 7
librsvg2
Will not fix
Red Hat Enterprise Linux 7
thunderbird
Will not fix
Red Hat Enterprise Linux 8
firefox
Will not fix
Red Hat Enterprise Linux 8
thunderbird
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | librsvg2-0:2.42.7-4.el8 | Fixed | RHSA-2020:4709 |
| Red Hat Enterprise Linux 5 | firefox | Out of support scope | n/a |
| Red Hat Enterprise Linux 5 | librsvg2 | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | chromium-browser | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | firefox | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | librsvg2 | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | librsvg2 | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | thunderbird | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | thunderbird | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This flaw is similar to billion laughs. A specially-crafted XML file can cause librsvg to consume excessive memory and result in denial of service. This flaw also affects browsers. Currently Mozilla and Google are working on updates for Firefox and Chromium browser respectively.
Red Hat mitigation
This flaw is triggered when untrusted XML files are parsed with applications compiled with librsvg2 library. Applications which do not parse untrusted XML files are not affected by this flaw.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (20 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 2.13% (0.02125) | 81.26th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.07% (0.02072) | 78.91th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.73% (0.00734) | 71.09th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.39% (0.00390) | 74.13th | v3 (v2023.03.01) |
| May 28, 2024 | 0.39% (0.00390) | 73.23th | v3 (v2023.03.01) |
| Mar 20, 2024 | 0.55% (0.00549) | 77.01th | v3 (v2023.03.01) |
| Jan 9, 2024 | 0.55% (0.00549) | 75.01th | v3 (v2023.03.01) |
| Dec 24, 2023 | 0.48% (0.00481) | 73.25th | v3 (v2023.03.01) |
| Dec 7, 2023 | 0.50% (0.00501) | 73.64th | v3 (v2023.03.01) |
| Nov 22, 2023 | 0.52% (0.00516) | 74.08th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.43% (0.00432) | 71.63th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.97% (0.00974) | 81.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.64% (0.00638) | 75.88th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.19% (0.05189) | 75.21th | v2 (v2022.01.01) |
| Feb 3, 2022 | 7.62% (0.07623) | 84.03th | v1 |
| Jan 6, 2022 | 7.62% (0.07623) | 83.88th | v1 |
| Jan 5, 2022 | 1.81% (0.01806) | 75.23th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.81% (0.01806) | 0.00th | v1 |
References (11)
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00024.html vendor-advisoryMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-20446 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1797608 Issue Tracking
- https://gitlab.gnome.org/GNOME/librsvg/issues/515 Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00016.html mailing-listMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/ vendor-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/ vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-20446
- https://security.netapp.com/advisory/ntap-20221111-0004/ Third Party Advisory
- https://usn.ubuntu.com/4436-1/ vendor-advisoryThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-20446
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00024.html | vendor-advisoryMailing ListThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2019-20446 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1797608 | Issue Tracking | |
| https://gitlab.gnome.org/GNOME/librsvg/issues/515 | Vendor Advisory | |
| https://lists.debian.org/debian-lts-announce/2020/07/msg00016.html | mailing-listMailing ListThird Party Advisory | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/ | vendor-advisory | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/ | vendor-advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-20446 | ||
| https://security.netapp.com/advisory/ntap-20221111-0004/ | Third Party Advisory | |
| https://usn.ubuntu.com/4436-1/ | vendor-advisoryThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2019-20446 |
Change history (0)
No recorded changes yet.