RHSA-2010:0440
Vulnerability from csaf_redhat - Published: 2010-05-25 20:41 - Updated: 2025-11-21 17:36OpenSSL before 0.9.8m does not check for a NULL return value from bn_wexpand function calls in (1) crypto/bn/bn_div.c, (2) crypto/bn/bn_gf2m.c, (3) crypto/ec/ec2_smpl.c, and (4) engines/e_ubsec.c, which has unspecified impact and context-dependent attack vectors.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 5Server-RHEV-Hypervisor-2:rhev-hypervisor-0:5.4-2.1.12.1.el5_4rhev2_1.noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server-RHEV-Hypervisor-2:rhev-hypervisor-0:5.4-2.1.12.1.el5_4rhev2_1.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server-RHEV-Hypervisor-2:rhev-hypervisor-pxe-0:5.4-2.1.12.1.el5_4rhev2_1.noarch | — |
Vendor Fix
fix
|
The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in the Apache HTTP Server 2.2.14 and earlier, OpenSSL before 0.9.8l, GnuTLS 2.8.5 and earlier, Mozilla Network Security Services (NSS) 3.12.4 and earlier, multiple Cisco products, and other products, does not properly associate renegotiation handshakes with an existing connection, which allows man-in-the-middle attackers to insert data into HTTPS sessions, and possibly other types of sessions protected by TLS or SSL, by sending an unauthenticated request that is processed retroactively by a server in a post-renegotiation context, related to a "plaintext injection" attack, aka the "Project Mogul" issue.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 5Server-RHEV-Hypervisor-2:rhev-hypervisor-0:5.4-2.1.12.1.el5_4rhev2_1.noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server-RHEV-Hypervisor-2:rhev-hypervisor-0:5.4-2.1.12.1.el5_4rhev2_1.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: 5Server-RHEV-Hypervisor-2:rhev-hypervisor-pxe-0:5.4-2.1.12.1.el5_4rhev2_1.noarch | — |
Vendor Fix
fix
|
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"text": "An updated rhev-hypervisor package that fixes two security issues and\nseveral bugs is now available.\n\nThe Red Hat Security Response Team has rated this update as having\nimportant security impact. Common Vulnerability Scoring System (CVSS) base\nscores, which give detailed severity ratings, are available for each\nvulnerability from the CVE links in the References section.",
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"text": "The rhev-hypervisor package provides a Red Hat Enterprise Virtualization\n(RHEV) Hypervisor ISO disk image. The RHEV Hypervisor is a dedicated\nKernel-based Virtual Machine (KVM) hypervisor. It includes everything\nnecessary to run and manage virtual machines: A subset of the Red Hat\nEnterprise Linux operating environment and the Red Hat Enterprise\nVirtualization Agent.\n\nNote: RHEV Hypervisor is only available for the Intel 64 and AMD64\narchitectures with virtualization extensions.\n\nIt was discovered that OpenSSL did not always check the return value of\nthe bn_wexpand() function. An attacker able to trigger a memory allocation\nfailure in that function could cause an application using the OpenSSL\nlibrary to crash or, possibly, execute arbitrary code. (CVE-2009-3245)\n\nA flaw was found in the way the TLS/SSL (Transport Layer Security/Secure\nSockets Layer) protocols handled session renegotiation. A man-in-the-middle\nattacker could use this flaw to prefix arbitrary plain text to a client\u0027s\nsession (for example, an HTTPS connection to a website). This could force\nthe server to process an attacker\u0027s request as if authenticated using the\nvictim\u0027s credentials. This update addresses this flaw in openssl, nss, and\ngnutls by implementing the TLS Renegotiation Indication Extension, as\ndefined in RFC 5746. (CVE-2009-3555)\n\nThis updated package provides updated components that include fixes for\nsecurity issues; however, these issues have no security impact for RHEV\nHypervisor. These fixes are for kernel issues CVE-2009-4307, CVE-2010-0727,\nCVE-2009-4027, and CVE-2010-1188; cpio issues CVE-2010-0624 and\nCVE-2007-4476; gnutls issue CVE-2009-2409; openssl issue CVE-2010-0433; and\ntar issues CVE-2010-0624 and CVE-2007-4476.\n\nThis update also fixes the following bugs:\n\n* bridged network interfaces using the bnx2x, mlx4_en, enic and s2io\ndrivers had Large Receive Offload (LRO) enabled by default. This caused\nsignificantly degraded network I/O performance. LRO has been disabled for\nall network interface drivers which have LRO enabled by default in Red Hat\nEnterprise Linux 5. With this change, network I/O performance is\nsignificantly improved. (BZ#576374, BZ#579730)\n\n* RHEV Hypervisor supported IPv6, but as this is not used to communicate\nwith the RHEV Manager, it is superfluous. Support for IPv6 has now been\ndisabled in RHEV Hypervisor. (BZ#577300)\n\n* for VLAN interfaces, the hardware (MAC) address of the interface was set\nonly in the VLAN ifcfg script, not in the physical interface ifcfg script.\nThis caused network interfaces with VLAN tags to intermittently fail on\nboot. The MAC address is now set in the ifcfg script for the underlying\nphysical interface. Network interfaces with VLAN tags now work consistently\nbetween reboots. (BZ#581876)\n\n* the hypervisor would hang on reboot after repeated upgrade operations,\ndue to GRUB accessing the /boot file system before it was flushed. The\n/boot file system is now remounted before GRUB accesses it. (BZ#591111)\n\nAs RHEV Hypervisor is based on KVM, the bug fixes from the KVM update\nRHBA-2010:0434 have been included in this update. Also included are the bug\nfixes from the RHEV Manager Agent (VDSM) update RHBA-2010:0435.\n\nKVM: https://rhn.redhat.com/errata/RHBA-2010-0434.html\nVDSM: https://rhn.redhat.com/errata/RHBA-2010-0435.html\n\nUsers of the Red Hat Enterprise Virtualization Hypervisor are advised to\nupgrade to this updated package, which corrects these issues.",
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"text": "570924"
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"text": "OpenSSL before 0.9.8m does not check for a NULL return value from bn_wexpand function calls in (1) crypto/bn/bn_div.c, (2) crypto/bn/bn_gf2m.c, (3) crypto/ec/ec2_smpl.c, and (4) engines/e_ubsec.c, which has unspecified impact and context-dependent attack vectors.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "openssl: missing bn_wexpand return value checks",
"title": "Vulnerability summary"
},
{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"release_date": "2010-02-23T00:00:00+00:00",
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"date": "2010-05-25T20:41:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttp://kbase.redhat.com/faq/docs/DOC-11259",
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"scores": [
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"accessComplexity": "HIGH",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.6,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:H/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
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"details": "Important"
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"title": "openssl: missing bn_wexpand return value checks"
},
{
"cve": "CVE-2009-3555",
"cwe": {
"id": "CWE-300",
"name": "Channel Accessible by Non-Endpoint"
},
"discovery_date": "2009-10-02T00:00:00+00:00",
"ids": [
{
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"text": "533125"
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{
"category": "description",
"text": "The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in the Apache HTTP Server 2.2.14 and earlier, OpenSSL before 0.9.8l, GnuTLS 2.8.5 and earlier, Mozilla Network Security Services (NSS) 3.12.4 and earlier, multiple Cisco products, and other products, does not properly associate renegotiation handshakes with an existing connection, which allows man-in-the-middle attackers to insert data into HTTPS sessions, and possibly other types of sessions protected by TLS or SSL, by sending an unauthenticated request that is processed retroactively by a server in a post-renegotiation context, related to a \"plaintext injection\" attack, aka the \"Project Mogul\" issue.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "TLS: MITM attacks via session renegotiation",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Additional information can be found in the Red Hat Knowledgebase article:\nhttps://access.redhat.com/articles/20490",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
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"threats": [
{
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"details": "Moderate"
}
],
"title": "TLS: MITM attacks via session renegotiation"
}
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.