crítica
CVE-2021-26691
httpd: mod_session: Heap overflow via a crafted SessionHeader value
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.
Severidad por fuente
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Bitnami9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
La etiqueta propia de Trivy es CRITICAL. Crítica según NVD, Bitnami, CBL-Mariner, Photon OS. Más baja según AlmaLinux (alta), Oracle (alta), Rocky Linux (alta), Red Hat (media), Amazon (media), Ubuntu (media).
Descripción
In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | apache | 2.4.47 |
| CBL-Mariner 1.0 | httpd | 0:2.4.46-5.cm1 |
| CBL-Mariner 2.0 | httpd | 0:2.4.46-10.cm2 |
| Photon OS 1.0 | httpd | 2.4.48-1.ph1 |
| Photon OS 2.0 | httpd | 2.4.48-1.ph2 |
| alma 8 | httpd:2.4::mod_http2, httpd:2.4::mod_md | 1.15.7-3.module_el8.5.0+2609+b30d9eec y 1 más |
| alpine 3.10 | apache2 | 2.4.48-r0 |
| alpine 3.11 | apache2 | 2.4.48-r0 |
| alpine 3.12 | apache2 | 2.4.48-r0 |
| alpine 3.13 | apache2 | 2.4.48-r0 |
| alpine 3.14 | apache2 | 2.4.48-r0 |
| alpine 3.15 | apache2 | 2.4.48-r0 |
Mostrar las 108 entradas de 47 fuentes
| Fuente | Paquete | Corregido en |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | apache | 2.4.47 |
| CBL-Mariner 1.0 | httpd | 0:2.4.46-5.cm1 |
| CBL-Mariner 2.0 | httpd | 0:2.4.46-10.cm2 |
| Photon OS 1.0 | httpd | 2.4.48-1.ph1 |
| Photon OS 2.0 | httpd | 2.4.48-1.ph2 |
| alma 8 | httpd:2.4::mod_http2 | 1.15.7-3.module_el8.5.0+2609+b30d9eec |
| alma 8 | httpd:2.4::mod_md | 1:2.0.8-8.module_el8.5.0+2609+b30d9eec |
| alpine 3.10 | apache2 | 2.4.48-r0 |
| alpine 3.11 | apache2 | 2.4.48-r0 |
| alpine 3.12 | apache2 | 2.4.48-r0 |
| alpine 3.13 | apache2 | 2.4.48-r0 |
| alpine 3.14 | apache2 | 2.4.48-r0 |
| alpine 3.15 | apache2 | 2.4.48-r0 |
| alpine 3.16 | apache2 | 2.4.48-r0 |
| alpine 3.17 | apache2 | 2.4.48-r0 |
| alpine 3.18 | apache2 | 2.4.48-r0 |
| alpine 3.19 | apache2 | 2.4.48-r0 |
| alpine 3.20 | apache2 | 2.4.48-r0 |
| alpine 3.21 | apache2 | 2.4.48-r0 |
| alpine 3.22 | apache2 | 2.4.48-r0 |
| alpine 3.23 | apache2 | 2.4.48-r0 |
| alpine 3.24 | apache2 | 2.4.48-r0 |
| alpine edge | apache2 | 2.4.48-r0 |
| amazon linux 1 | httpd24 | 2.4.48-1.92.amzn1 |
| amazon linux 1 | httpd24-debuginfo | 2.4.48-1.92.amzn1 |
| amazon linux 1 | httpd24-devel | 2.4.48-1.92.amzn1 |
| amazon linux 1 | httpd24-manual | 2.4.48-1.92.amzn1 |
| amazon linux 1 | httpd24-tools | 2.4.48-1.92.amzn1 |
| amazon linux 1 | mod24_ldap | 2.4.48-1.92.amzn1 |
| amazon linux 1 | mod24_md | 2.4.48-1.92.amzn1 |
| amazon linux 1 | mod24_proxy_html | 1:2.4.48-1.92.amzn1 |
| amazon linux 1 | mod24_session | 2.4.48-1.92.amzn1 |
| amazon linux 1 | mod24_ssl | 1:2.4.48-1.92.amzn1 |
| amazon linux 2 | httpd | 2.4.48-2.amzn2 |
| amazon linux 2 | httpd-debuginfo | 2.4.48-2.amzn2 |
| amazon linux 2 | httpd-devel | 2.4.48-2.amzn2 |
| amazon linux 2 | httpd-filesystem | 2.4.48-2.amzn2 |
| amazon linux 2 | httpd-manual | 2.4.48-2.amzn2 |
| amazon linux 2 | httpd-tools | 2.4.48-2.amzn2 |
| amazon linux 2 | mod_ldap | 2.4.48-2.amzn2 |
| amazon linux 2 | mod_md | 2.4.48-2.amzn2 |
| amazon linux 2 | mod_proxy_html | 1:2.4.48-2.amzn2 |
| amazon linux 2 | mod_session | 2.4.48-2.amzn2 |
| amazon linux 2 | mod_ssl | 1:2.4.48-2.amzn2 |
| debian 10 | apache2 | 2.4.38-3+deb10u5 |
| debian 11 | apache2 | 2.4.46-6 |
| debian 12 | apache2 | 2.4.46-6 |
| debian 13 | apache2 | 2.4.46-6 |
| debian 14 | apache2 | 2.4.46-6 |
| debian 9 | apache2 | 2.4.25-3+deb9u10 |
| echo | apache2 | 2.4.46-6 |
| Oracle Linux 7 | httpd | 2.4.6-97.0.5.el7_9.4 |
| Oracle Linux 7 | httpd-devel | 2.4.6-97.0.5.el7_9.4 |
| Oracle Linux 7 | httpd-manual | 2.4.6-97.0.5.el7_9.4 |
| Oracle Linux 7 | httpd-tools | 2.4.6-97.0.5.el7_9.4 |
| Oracle Linux 7 | mod_ldap | 2.4.6-97.0.5.el7_9.4 |
| Oracle Linux 7 | mod_proxy_html | 1:2.4.6-97.0.5.el7_9.4 |
| Oracle Linux 7 | mod_session | 2.4.6-97.0.5.el7_9.4 |
| Oracle Linux 7 | mod_ssl | 1:2.4.6-97.0.5.el7_9.4 |
| Oracle Linux 8 | httpd | 2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 |
| Oracle Linux 8 | httpd-devel | 2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 |
| Oracle Linux 8 | httpd-filesystem | 2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 |
| Oracle Linux 8 | httpd-manual | 2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 |
| Oracle Linux 8 | httpd-tools | 2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 |
| Oracle Linux 8 | mod_http2 | 1.15.7-3.module+el8.4.0+20024+b87b2deb |
| Oracle Linux 8 | mod_ldap | 2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 |
| Oracle Linux 8 | mod_md | 1:2.0.8-8.module+el8.3.0+7816+49791cfd |
| Oracle Linux 8 | mod_proxy_html | 1:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 |
| Oracle Linux 8 | mod_session | 2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 |
| Oracle Linux 8 | mod_ssl | 1:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 |
| Red Hat | httpd | sin corrección indicada |
| Red Hat | httpd-devel | sin corrección indicada |
| Red Hat | httpd-manual | sin corrección indicada |
| Red Hat | httpd-tools | sin corrección indicada |
| Red Hat | httpd24-httpd | sin corrección indicada |
| Red Hat | httpd24-httpd-devel | sin corrección indicada |
| Red Hat | httpd24-httpd-manual | sin corrección indicada |
| Red Hat | httpd24-httpd-tools | sin corrección indicada |
| Red Hat | httpd24-mod_ldap | sin corrección indicada |
| Red Hat | httpd24-mod_md | sin corrección indicada |
| Red Hat | httpd24-mod_proxy_html | sin corrección indicada |
| Red Hat | httpd24-mod_session | sin corrección indicada |
| Red Hat | httpd24-mod_ssl | sin corrección indicada |
| Red Hat | mod_ldap | sin corrección indicada |
| Red Hat | mod_ssl | sin corrección indicada |
| rocky 8 | httpd:2.4::httpd | 2.4.37-39.module+el8.4.0+571+fd70afb1 |
| rocky 8 | httpd:2.4::httpd-devel | 2.4.37-39.module+el8.4.0+571+fd70afb1 |
| rocky 8 | httpd:2.4::httpd-filesystem | 2.4.37-39.module+el8.4.0+571+fd70afb1 |
| rocky 8 | httpd:2.4::httpd-manual | 2.4.37-39.module+el8.4.0+571+fd70afb1 |
| rocky 8 | httpd:2.4::httpd-tools | 2.4.37-39.module+el8.4.0+571+fd70afb1 |
| rocky 8 | httpd:2.4::mod_http2 | 1.15.7-3.module+el8.5.0+695+1fa8055e |
| rocky 8 | httpd:2.4::mod_ldap | 2.4.37-39.module+el8.4.0+571+fd70afb1 |
| rocky 8 | httpd:2.4::mod_md | 1:2.0.8-8.module+el8.5.0+695+1fa8055e |
| rocky 8 | httpd:2.4::mod_proxy_html | 1:2.4.37-39.module+el8.4.0+571+fd70afb1 |
| rocky 8 | httpd:2.4::mod_session | 2.4.37-39.module+el8.4.0+571+fd70afb1 |
| rocky 8 | httpd:2.4::mod_ssl | 1:2.4.37-39.module+el8.4.0+571+fd70afb1 |
| root.io debian 12 | rootio-apache2 | 2.4.46-6 |
| root.io debian 13 | rootio-apache2 | 2.4.46-6 |
| ubuntu 14.04-ESM | apache2 | 2.4.7-1ubuntu4.22+esm1 |
| ubuntu 16.04-ESM | apache2 | 2.4.18-2ubuntu3.17+esm1 |
| ubuntu 18.04 | apache2 | 2.4.29-1ubuntu4.16 |
| ubuntu 18.04-ESM | apache2 | 2.4.29-1ubuntu4.16 |
| ubuntu 20.04 | apache2 | 2.4.41-4ubuntu3.3 |
| ubuntu 20.04-ESM | apache2 | 2.4.41-4ubuntu3.3 |
| ubuntu 20.10 | apache2 | 2.4.46-1ubuntu1.2 |
| ubuntu 21.04 | apache2 | 2.4.46-4ubuntu1.1 |
| ubuntu 21.10 | apache2 | 2.4.46-4ubuntu2 |
| ubuntu 22.04 | apache2 | 2.4.46-4ubuntu2 |
Referencias
- http://httpd.apache.org/security/vulnerabilities_24.html
- http://www.openwall.com/lists/oss-security/2021/06/10/7
- https://access.redhat.com/security/cve/CVE-2021-26691
- https://bugzilla.redhat.com/show_bug.cgi?id=1966732
- https://bugzilla.redhat.com/show_bug.cgi?id=2005117
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26691
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40438
- https://errata.almalinux.org/8/ALSA-2021-3816.html
Las 28 referencias
- https://errata.rockylinux.org/RLSA-2021:3816
- https://httpd.apache.org/security/vulnerabilities_24.html
- https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2021-26691
- https://linux.oracle.com/cve/CVE-2021-26691.html
- https://linux.oracle.com/errata/ELSA-2022-0143.html
- https://lists.apache.org/thread.html/r50cae1b71f1e7421069036b213c26da7d8f47dd59874e3bd956959fe@%3Cannounce.httpd.apache.org%3E
- https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd@%3Cdev.httpd.apache.org%3E
- https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3@%3Ccvs.httpd.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/
- https://nvd.nist.gov/vuln/detail/CVE-2021-26691
- https://security.gentoo.org/glsa/202107-38
- https://security.netapp.com/advisory/ntap-20210702-0001/
- https://ubuntu.com/security/notices/USN-4994-1
- https://ubuntu.com/security/notices/USN-4994-2
- https://www.cve.org/CVERecord?id=CVE-2021-26691
- https://www.debian.org/security/2021/dsa-4937
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuoct2021.html